Defn: See Sagittal.

RHABDOLITH
Rhab"do*lith, n. Etym: [Gr. "ra`bdos a rod + -lith.]

Defn: A minute calcareous rodlike structure found both at the surface and the bottom of the ocean; — supposed by some to be a calcareous alga.

RHABDOLOGY
Rhab*dol"o*gy, n.

Defn: Same as Rabdology.

RHABDOM
Rhab"dom, n. Etym: [Gr. "ra`bdos a rod.] (Zoöl.)

Defn: One of numerous minute rodlike structures formed of two or more cells situated behind the retinulæ in the compound eyes of insects, etc. See Illust. under Ommatidium.

RHABDOMANCY
Rhab"do*man`cy, n.

Defn: Same as Rabdomancy.

RHABDOMERE
Rhab"do*mere, n. Etym: [Rhabdom + -mere.] (Zoöl.)