a. [ Cotyle + -oid ] (Anat.) (a) Shaped like a cup; cup-shaped; as, the cotyloid cavity, the cup-shaped socket which receives the head of the thigh bone. (b) Pertaining to a cotyloid cavity; as, the cotyloid ligament, or notch.
Syn. -- acetabular, cotyloid. [ 1913 Webster + WordNet 1.5 ]

n. 1. (Physiol. Chem.) A substance (as albumin, gum, gelatin, etc.) which is of a gelatinous rather than a crystalline nature, and which diffuses itself through animal membranes or vegetable parchment more slowly than crystalloids do; -- opposed to crystalloid. [ 1913 Webster ]

2. (Med.) A gelatinous substance found in colloid degeneration and colloid cancer. [ 1913 Webster ]

Styptic colloid (Med.), a preparation of astringent and antiseptic substances with some colloid material, as collodion, for ready use. [ 1913 Webster ]

a. [ Gr. ko`lla glue + -oid. Cf. Collodion. ] Resembling glue or jelly; characterized by a jellylike appearance; gelatinous; as, colloid tumors. [ 1913 Webster ]

a. Pertaining to, or of the nature of, colloids. [ 1913 Webster ]

n. The state or quality of being colloidal. [ 1913 Webster ]