Foramina pl foramen

forceps n.; pl. & sing. [L. forceps, pincers] 1. (ARTHRO) Hook or pincer-like processes terminating the abdomen of various arthropods which function as weapons in predation or for defense, for holding the mate during courtship, or even for cleaning the body or folding the wings. 2. (ARTHRO: Crustacea) The chelipeds. 3. (porif) Tongs-shaped.

forcipate a. [L. forceps, pincers] Bearing forceps or similar structures.

forcipate mastax (ROTIF) Slender, elongate trophi formed by rami and fulcrum (incus).

forcipiform a. [L. forceps, pincers; forma, shape] Forceps-shaped.

forebrain n. [A.S. for, fore; braegen, brain] (ARTHRO: Insecta) The protocerebrum.

foregut n. [A.S. for, fore; gut, channel] The anterior portion of the alimentary tract, from the mouth to the midgut. see stomodeum.

forehead n. [A.S. for, fore; heafod, head] (ARTHRO: Insecta) The frons.

foreleg n. [A.S. for, fore; ON. leggr, leg] (ARTHRO: Insecta) One of a pair of legs on the prothorax.

forfex n. [L. forfex, shears] A pair of shears.

forficiform a. [L. forfex, shears; forma, shape] 1. Scissor-shaped. 2. (ECHINOD: Asteroidea) The pedicellaria of certain starfish.

forficulate a. [L. dim. forfex, shears] Scissor-shaped; forked; furcate.

form n. [L. forma, shape] 1. An image or likeness. 2. A term for a single individual, phenon, or taxon. see group.

formaldehyde A colorless gas with a pungent odor; forms a 40% solution in water (formalin) which is used as a fixative, preservative and for hardening tissues; formalin.

formalin The 40% solution of formaldehyde in water; used as a preservative and for hardening tissues.

formation n. [L. forma, shape; -tion, process] A definite type of habitation, i.e., tundra, coniferous forest, prairie, rain forest, etc.

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