DISCOHERENT
Dis`co*her"ent, a.

Defn: Incoherent. [R.]

DISCOID
Dis"coid, a. Etym: [Gr. discoïde. See Disk.]

Defn: Having the form of a disk, as those univalve shells which have the whorls in one plane, so as to form a disk, as the pearly nautilus. Discoid flower (Bot.), a compound flower, consisting of tubular florets only, as a tansy, lacking the rays which are seen in the daisy and sunflower.

DISCOID
Dis"coid, n.

Defn: Anything having the form of a discus or disk; particularly, a discoid shell.

DISCOIDAL
Dis*coid"al, a. Etym: [Cf. F. discoïdal.]

Defn: Disk-shaped; discoid.

DISCOLITH
Dis"co*lith, n. Etym: [Gr. -lith.] (Biol.)

Defn: One of a species of coccoliths, having an oval discoidal body, with a thick strongly refracting rim, and a thinner central portion. One of them measures about