a. [ Gr. &unr_;, &unr_;, ray + -oid. ] Having the form of rays; radiated, as an actinia. [ 1913 Webster ]

n. 1. (Med.) Lymphoid tissue in the roof of the nasopharynx; -- often in the pl. Stedman 25. [ AS ]

2. (Med.) A swelling produced by overgrowth of adenoid{ 1 } tissue; -- usually in pl. AS [ Webster 1913 Suppl. ]

adj. 1. (Med.) Of or relating to a gland. [ AS ]

2. (Med.) Pertaining to adenoids{ 2 }. Merriam Webster Medical Dictionary. [ AS ]

{ a. Glandlike; glandular. [ 1913 Webster ]

a. [ L. albumen + -oid. ] (Chem.) Resembling albumin. -- n. One of a class of organic principles (called also proteids) which form the main part of organized tissues. Brunton. [ 1913 Webster ]

a. (Chem.) Of the nature of an albuminoid. [ 1913 Webster ]

a. [ Gr. 'alkyo`nion + -oid. ] (Zool.) Like or pertaining to the Alcyonaria. -- n. A zoöphyte of the order Alcyonaria. [ 1913 Webster ]

n. (Anat.) The alisphenoid bone. [ 1913 Webster ]

{ } a. [ L. ala wing + E. sphenoid. ] (Anat.) Pertaining to or forming the wing of the sphenoid; relating to a bone in the base of the skull, which in the adult is often consolidated with the sphenoid; as, alisphenoid bone; alisphenoid canal. [ 1913 Webster ]

n. 1. one of the coiled chambered fossil shells of extinct mollusks; same as ammonite.
Syn. -- ammonite [ WordNet 1.5 ]

‖a. [ NL., fr. L. amphisbaena + -oid. ] (Zool.) Like or pertaining to the lizards of the genus Amphisbæna. [ 1913 Webster ]

a. Elbowlike; anconal. [ 1913 Webster ]

a. [ Gr. &unr_; like a cobweb; &unr_; spider, spider's web + e'i^dos form. ] 1. Resembling a spider's web; cobweblike. [ 1913 Webster ]

2. (Anat.) Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater. [ 1913 Webster ]

3. (Bot.) Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby. [ 1913 Webster ]

n. 1. (Anat.) The arachnoid membrane. [ 1913 Webster ]

2. (Zool.) One of the Arachnoidea. [ 1913 Webster ]

a. (Anat.) Pertaining to the arachnoid membrane; arachnoid. [ 1913 Webster ]

‖n. pl. [ NL. ] (Zool.) Same as Arachnida. [ 1913 Webster ]

a. [ Gr. &unr_; shaped like a ladle; &unr_; a ladle + e'i^dos form. ] (Anat.) Ladle-shaped; -- applied to two small cartilages of the larynx, and also to the glands, muscles, etc., connected with them. The cartilages are attached to the cricoid cartilage and connected with the vocal cords. [ 1913 Webster ]

‖n. [ NL., from L. balaena whale + -oid. ] (Zool.) A division of the Cetacea, including the right whale and all other whales having the mouth fringed with baleen. See Baleen. [ 1913 Webster ]

a. [ Gr. ba`lanos acorn + -oid. ] (Zool.) Resembling an acorn; -- applied to a group of barnacles having shells shaped like acorns. See Acornshell, and Barnacle. [ 1913 Webster ]

n. (Anat.) The basisphenoid bone. [ 1913 Webster ]

{ } a. [ Basi- + sphenoid. ] (Anat.) Of or pertaining to that part of the base of the cranium between the basioccipital and the presphenoid, which usually ossifies separately in the embryo or in the young, and becomes a part of the sphenoid in the adult. [ 1913 Webster ]

n. an order of extinct dibranchiate cephalopods related to the surviving spirulas.
Syn. -- order Belemnoidea. [ WordNet 1.5 ]

adj. (Chem.) similar to benzene in structure or linkage; having an aromatic ring system. [ WordNet 1.5 ]

n. a vitamin that maintains the resistance of cell and capillary walls to permeation; -- called also vitamin P and citrin. [ WordNet 1.5 ]

adj. of or pertaining to bitumen. like a bitumenoid remark
Syn. -- bitumenoid. [ WordNet 1.5 ]

n. One of the Brachioganoidei. [ 1913 Webster ]

‖n. pl.[ NL., from L. brachium (bracch-) arm + NL. ganoidei. ] (Zool.) An order of ganoid fishes of which the bichir of Africa is a living example. See Crossopterygii. [ 1913 Webster ]

a. [ Buccinum + -oid. ] (Zool.) Resembling the genus Buccinum, or pertaining to the Buccinidæ, a family of marine univalve shells. See Whelk, and Prosobranchiata. [ 1913 Webster ]

[ From Gr. karki`nos, a crab + -oid. ] n. A small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; it is usually associated with excessive secretion of serotonin. [ WordNet 1.5 ]

n. [ NL. chinium quinine (cf. G. & F. china Peruvian bark) + -oil + -ine. ] (Chem.) See Quinodine. [ 1913 Webster ]

a. [ Gr. choa`nh funnel + -oid. ] (Anat.) Funnel-shaped; -- applied particularly to a hollow muscle attached to the ball of the eye in many reptiles and mammals. [ 1913 Webster ]

‖n. [ NL., fr. Gr. cho`ndros cartilage + NL. ganoidei. See Ganoid. ] (Zool.) An order of ganoid fishes, including the sturgeons; -- so called on account of their cartilaginous skeleton. [ 1913 Webster ]

a. [ Gr. kli`nh bed + -oid. ] (Anat.) Like a bed; -- applied to several processes on the inner side of the sphenoid bone. [ 1913 Webster ]

n. [ Gr. kwnoeidh`s conical; kw^nos cone + e'i^dos form: cf. F. conoïde. ] 1. Anything that has a form resembling that of a cone. [ 1913 Webster ]

2. (Geom.) (a) A solid formed by the revolution of a conic section about its axis; as, a parabolic conoid, elliptic conoid, etc.; -- more commonly called paraboloid, ellipsoid, etc. (b) A surface which may be generated by a straight line moving in such a manner as always to meet a given straight line and a given curve, and continue parallel to a given plane. Math. Dict. [ 1913 Webster ]

a. Resembling a cone; conoidal. [ 1913 Webster ]

a. [ Cf. F. conoïdal. ] Nearly, but not exactly, conical. Lindley. [ 1913 Webster ]

{ , a. Pertaining to a conoid; having the form of a conoid. [ 1913 Webster ]

a. [ Gr. korw`nh crow + -oid: cf. F. coronoïde. ] (Anat.) Resembling the beak of a crow; as, the coronoid process of the jaw, or of the ulna. [ 1913 Webster ]

a. [ NL. coryphaena + -oid. ] (Zool.) Belonging to, or like, the genus Coryphæna. See Dolphin. [ 1913 Webster ]

a. [ See Crinoidea. ] (Zool.) Crinoidal. -- n. One of the Crinoidea. [ 1913 Webster ]

a. (Zool.) Of pertaining to crinoids; consisting of, or containing, crinoids. [ 1913 Webster ]

‖n. pl. [ NL., from Gr. kri`non lily + -oid: cf. F. crinoïde. ] (Zool.) A large class of Echinodermata, including numerous extinct families and genera, but comparatively few living ones. Most of the fossil species, like some that are recent, were attached by a jointed stem. See Blastoidea, Cystoidea, Comatula. [ 1913 Webster ]

n. (Zool) One of the Crinoidea. [ 1913 Webster ]

a. (Zool.) (a) Having a comblike margin, as a ctenoid scale. (b) Pertaining to the Ctenoidei. -- n. A ctenoidean. [ 1913 Webster ]

a. (Zool.) Relating to the Ctenoidei. -- n. One of the Ctenoidei. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. &unr_;&unr_;&unr_;, &unr_;&unr_;&unr_;&unr_;, comb + -oid. ] (Zool.) A group of fishes, established by Agassiz, characterized by having scales with a pectinated margin, as in the perch. The group is now generally regarded as artificial. [ 1913 Webster ]

a. (Zool.) Of or pertaining to the Cycloganoidei. [ 1913 Webster ]

n. (Zool.) One of the Cycloganoidei. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. ky`klos circle + NL. ganoidei. See Ganoid. ] (Zool.) An order of ganoid fishes, having cycloid scales. The bowfin (Amia calva) is a living example. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. &unr_;&unr_;&unr_;, &unr_;&unr_;&unr_;, a dog + -oid. ] (Zool.) A division of Carnivora, including the dogs, wolves, and foxes. [ 1913 Webster ]