v. t. [ imp. & p. p. Acidulated p. pr. & vb. n. Acidulating ] [ Cf. F. aciduler. See Acidulous. ] To make sour or acid in a moderate degree; to sour somewhat. Arbuthnot. [ 1913 Webster ]

adj. 1. made slightly acidic [ WordNet 1.5 ]

‖n. [ From Adula, a mountain peak in Switzerland, where fine specimens are found. ] (Min.) A transparent or translucent variety of common feldspar, or orthoclase, which often shows pearly opalescent reflections; -- called by lapidaries moonstone. [ 1913 Webster ]

v. t. [ L. adulatus, p. p. of adulari. ] To flatter in a servile way. Byron. [ 1913 Webster ]

n. [ F. adulation, fr. L. adulatio, fr. adulari, adulatum, to flatter. ] Servile flattery; praise in excess, or beyond what is merited. [ 1913 Webster ]

Think'st thou the fiery fever will go out
With titles blown from adulation? Shak. [ 1913 Webster ]

Syn. -- Sycophancy; cringing; fawning; obsequiousness; blandishment. -- Adulation, Flattery, Compliment. Men deal in compliments from a desire to please; they use flattery either from undue admiration, or a wish to gratify vanity; they practice adulation from sordid motives, and with a mingled spirit of falsehood and hypocrisy. Compliment may be a sincere expression of due respect and esteem, or it may be unmeaning; flattery is apt to become gross; adulation is always servile, and usually fulsome. [ 1913 Webster ]

n. [ L., fr. adulari: cf. F. adulateur. ] A servile or hypocritical flatterer. Carlyle. [ 1913 Webster ]

a. [ L. adulatorius, fr. adulari: cf. OF. adulatoire. ] Containing excessive praise or compliment; servilely praising; flattering; as, an adulatory address. [ 1913 Webster ]

A mere rant of adulatory freedom. Burke. [ 1913 Webster ]

n. A woman who flatters with servility. [ 1913 Webster ]

a. [ Pref. bi- + glandular. ] Having two glands, as a plant. [ 1913 Webster ]

‖n. [ NL., fr. L. calendae calends. ] (Bot.) A genus of composite herbaceous plants. One species, Calendula officinalis, is the common marigold, and was supposed to blossom on the calends of every month, whence the name. [ 1913 Webster ]

v. t. [ Pref. circum- + undulate. ] To flow round, as waves. [ R. ] [ 1913 Webster ]

n. (Electronics) An electronic device which extracts the modulation from a radio carrier wave, and outputs the original information-bearing signal.
Syn. -- detector. [ WordNet 1.5 +PJC ] [ 1913 Webster ]

a. [ Cf. F. glandulaire. See Glandule. ] Containing or supporting glands; consisting of glands; pertaining to glands. [ 1913 Webster ]

n. [ Cf. F. glandulation. ] (Bot.) The situation and structure of the secretory vessels in plants. Martyn. [ 1913 Webster ]

Glandulation respects the secretory vessels, which are either glandules, follicles, or utricles. J. Lee. [ 1913 Webster ]

n. A genus of plants of the mint family including the lavender{ 1 }.
Syn. -- genus Lavandula. [ WordNet 1.5 ]

a. Of or pertaining to mode, modulation, module, or modius; as, modular arrangement; modular accent; modular measure. [ 1913 Webster ]

v. t. [ imp. & p. p. Modulated p. pr. & vb. n. Modulating ] [ L. modulatus, p. p. of modulari to measure, to modulate, fr. modulus a small measure, meter, melody, dim. of modus. See Mode. ] 1. To form, as sound, to a certain key, or to a certain portion. [ 1913 Webster ]

2. To vary or inflect in a natural, customary, or musical manner; as, the organs of speech modulate the voice in reading or speaking. [ 1913 Webster ]

Could any person so modulate her voice as to deceive so many? Broome. [ 1913 Webster ]

3. (Electronics) To alter the amplitude, frequency, phase, or intensity of (the carrier wave of a radio signal) at intervals, so as to represent information to be conveyed by the signal; -- a technique used to convey information by means of radio waves transmitted by one electronic device and received by another. [ WordNet 1.5 ]

v. i. (Mus.) To pass from one key into another. [ 1913 Webster ]

adj. (Electronics) 1. Having either amplitude, intensity, frequency, or phase altered at intervals to represent information to be transmitted; -- of the carrier wave of a radio signal transmitted from one device to another for the purpose of conveying information. Opposite of unmodulated. [ Narrower terms: frequency modulated; amplitude modulated ] [ WordNet 1.5 ]

2. altered in volume as well as tone or pitch. [ WordNet 1.5 ]

n. [ L. modulatio: cf. F. modulation. ] 1. The act of modulating, or the state of being modulated; as, the modulation of the voice. [ 1913 Webster ]

2. Sound modulated; melody. [ R. ] Thomson. [ 1913 Webster ]

3. (Mus.) A change of key, whether transient, or until the music becomes established in the new key; a shifting of the tonality of a piece, so that the harmonies all center upon a new keynote or tonic; the art of transition out of the original key into one nearly related, and so on, it may be, by successive changes, into a key quite remote. There are also sudden and unprepared modulations. [ 1913 Webster ]

4. (Electronics) The alteration of hte amplitude, intensity, frequency, or phase (of the carrier wave of a radio signal) at intervals, so as to represent information to be transmitted. [ WordNet 1.5 ]

n. [ L. ] One who, or that which, modulates. Denham. [ 1913 Webster ]

n. An electronic device that converts electronic signals into sound waves, and sound waves into electronic signals, used to transmit information between computers by the use of ordinary telephone lines; usually called a modem. [ PJC ]

a. [ L. nidulans, p. pr.: cf. F. Nidulant. ] 1. Nestling, as a bird in its nest. [ 1913 Webster ]

2. (Bot.) Lying loose in pulp or cotton within a berry or pericarp, as in a nest. [ 1913 Webster ]

v. i. [ imp. & p. p. Nidulated p. pr. & vb. n. Nidulating. ] [ L. nidulari, fr. nidulus, dim. of nidus a nest. ] To make a nest, as a bird. [ R. ] Cockeram. [ 1913 Webster ]

n. The time of remaining in the nest. [ R. ] Sir T. Browne. [ 1913 Webster ]

a. [ Cf. F. nodulaire. ] 1. Of or pertaining to a nodule or knot. [ 1913 Webster ]

2. Having nodules or in the form of a nodule or knot. [ PJC ]

adj. Having nodules or occurring in the form of nodules.
Syn. -- nodular, noduled. [ WordNet 1.5 +PJC ]

a. (Chem.) Existing in the state of a protoxide; -- said of an oxide. [ R. ] [ 1913 Webster ]

a. Pendulous. [ 1913 Webster ]

v. i. To swing as a pendulum. [ R. ] [ 1913 Webster ]

‖n.; pl. Radulae [ L., a scraper, fr. radere to scrape. ] (Zool.) The chitinous ribbon bearing the teeth of mollusks; -- called also lingual ribbon, and tongue. See Odontophore. [ 1913 Webster ]

v. t. [ See Stridulous. ] To make a shrill, creaking noise; specifically (Zool.), to make a shrill or musical sound, such as is made by the males of many insects. [ 1913 Webster ]

n. The act of stridulating. Specifically: (Zool.) (a) The act of making shrill sounds or musical notes by rubbing together certain hard parts, as is done by the males of many insects, especially by Orthoptera, such as crickets, grasshoppers, and locusts. (b) The noise itself. [ 1913 Webster ]

☞ The crickets stridulate by rubbing together the strong nervures of the fore wings. Many grasshoppers stridulate by rubbing the hind legs across strong nervures on the fore wings. The green grasshoppers and katydids stridulate by means of special organs at the base of the fore wings. [ 1913 Webster ]

n. [ NL. ] That which stridulates. Darwin. [ 1913 Webster ]

a. Stridulous; able to stridulate; used in stridulating; adapted for stridulation. Darwin. [ 1913 Webster ]

a. Acidulated to excess. [ R. ] [ 1913 Webster ]

a. Undulating. [ R. ] [ 1913 Webster ]

a. [ See Undulate. ] Moving like waves; undulatory. [ Obs. ] Sir T. Browne. [ 1913 Webster ]

a. [ L. undulatus undulated, wavy, a dim. from unda a wave; cf. AS. &unr_;&unr_;, Icel. unnr; perhaps akin to E. water. Cf. Abound, Inundate, Redound, Surround. ] Same as Undulated. [ 1913 Webster ]

v. t. [ imp. & p. p. Undulated p. pr. & vb. n. Undulating. ] To cause to move backward and forward, or up and down, in undulations or waves; to cause to vibrate. [ 1913 Webster ]

Breath vocalized, that is, vibrated and undulated. Holder. [ 1913 Webster ]

v. i. To move in, or have, undulations or waves; to vibrate; to wave; as, undulating air. [ 1913 Webster ]

a. 1. Resembling, or in the nature of, waves; having a wavy surface; undulatory. [ 1913 Webster ]

2. (Bot.) Waved obtusely up and down, near the margin, as a leaf or corolla; wavy. [ 1913 Webster ]

3. (Zool.) Formed with elevations and depressions resembling waves; having wavelike color markings; as, an undulated shell. [ 1913 Webster ]

a. Rising and falling like waves; resembling wave form or motion; undulatory; rolling; wavy; as, an undulating medium; undulating ground. -- Un"du*la`ting*ly. adv. [1913 Webster]

n. [ Cf. F. ondulation. ] 1. The act of undulating; a waving motion or vibration; as, the undulations of a fluid, of water, or of air; the undulations of sound. [ 1913 Webster ]

2. A wavy appearance or outline; waviness. Evelyn. [ 1913 Webster ]

3. (Mus.) (a) The tremulous tone produced by a peculiar pressure of the finger on a string, as of a violin. (b) The pulsation caused by the vibrating together of two tones not quite in unison; -- called also beat. [ 1913 Webster ]

4. (Physics) A motion to and fro, up and down, or from side to side, in any fluid or elastic medium, propagated continuously among its particles, but with no translation of the particles themselves in the direction of the propagation of the wave; a wave motion; a vibration. [ 1913 Webster ]

n. One who advocates the undulatory theory of light. Whewell. [ 1913 Webster ]

a. Consisting in, or accompanied by, undulations; undulatory. [ 1913 Webster ]

a. [ Cf. F. ondulatoire. ] Moving in the manner of undulations, or waves; resembling the motion of waves, which successively rise or swell rise or swell and fall; pertaining to a propagated alternating motion, similar to that of waves. [ 1913 Webster ]

Undulatory theory, or
Wave theory (of light) (Opt.), that theory which regards the various phenomena of light as due to undulations in an ethereal medium, propagated from the radiant with immense, but measurable, velocities, and producing different impressions on the retina according to their amplitude and frequency, the sensation of brightness depending on the former, that of color on the latter. The undulations are supposed to take place, not in the direction of propagation, as in the air waves constituting sound, but transversely, and the various phenomena of refraction, polarization, interference, etc., are attributable to the different affections of these undulations in different circumstances of propagation. It is computed that the frequency of the undulations corresponding to the several colors of the spectrum ranges from 458 millions of millions per second for the extreme red ray, to 727 millions of millions for the extreme violet, and their lengths for the same colors, from the thirty-eight thousandth to the sixty thousandth part of an inch. The theory of ethereal undulations is applicable not only to the phenomena of light, but also to those of heat. [ 1913 Webster ]