n.; pl. Altos [ It. alto high, fr. L. altus. Cf. Alt. ] 1. (Mus.) Formerly the part sung by the highest male, or counter-tenor, voices; now the part sung by the lowest female, or contralto, voices, between in tenor and soprano. In instrumental music it now signifies the tenor. [ 1913 Webster ]

2. An alto singer. [ 1913 Webster ]

Alto clef (Mus.) the counter-tenor clef, or the C clef, placed so that the two strokes include the middle line of the staff. Moore. [ 1913 Webster ]

n. [ L. altus high + L. & E. cumulus. ] (Meteor.) A fleecy cloud formation consisting of large whitish or grayish globular cloudlets with shaded portions, often grouped in flocks or rows. [ Webster 1913 Suppl. ]

adv. [ OE. altogedere; al all + togedere together. See Together. ] 1. All together; conjointly. [ Obs. ] [ 1913 Webster ]

Altogether they went at once. Chaucer. [ 1913 Webster ]

2. Without exception; wholly; completely. [ 1913 Webster ]

Every man at his best state is altogether vanity. Ps. xxxix. 5. [ 1913 Webster ]

n. 1. nakedness; -- used mostly in the phrase “in the altogether”. [ informal ]
Syn. -- raw, buff, birthday suit [ WordNet 1.5 ]

n. [ L. altus high + -meter. ] A theodolite. Knight. [ 1913 Webster ]

n. Alto-rilievo. [ 1913 Webster ]

‖n.; pl. Alto-rilievos [ It. ] (Sculp.) High relief; sculptured work in which the figures project more than half their thickness; as, this figure is an alto-rilievo or in alto-rilievo. [ 1913 Webster ]

☞ When the figure stands only half out, it is called mezzo-rilievo, demi-rilievo, or medium relief; when its projection is less than one half, basso-rilievo, bas-relief, or low relief. [ 1913 Webster ]

n. [ L. altus high + L. & E. stratus. ] (Meteor.) A cloud formation similar to cirro-stratus, but heavier and at a lower level; a stratus cloud at an intermediate altitude of 2 or 3 miles. [ Webster 1913 Suppl. + WordNet 1.5 ]