Defn: Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid.

ORT Ort, n.; pl. Orts. Etym: [Akin to LG. ort, ortels, remnants of food, refuse, OFries. ort, OD. oorete, ooraete; prob. from the same prefix as in E. ordeal + a word akin to eat.]

Defn: A morsel left at a meal; a fragment; refuse; — commonly used
in the plural. Milton.
Let him have time a beggar's orts to crave. Shak.

ORTALIDIAN
Or`ta*lid"i*an, n. (Zoöl.)

Defn: Any one of numerous small two-winged flies of the family Ortalidæ. The larvæ of many of these flies live in fruit; those of others produce galls on various plants.

ORTHID
Or"thid, n. (Zoöl.)

Defn: A brachiopod shell of the genus Orthis, and allied genera, of the family Orthidæ.

ORTHIS
Or"this, n. Etym: [NL., fr. Gr. (Zoöl.)

Defn: An extinct genus of Brachiopoda, abundant in the Paleozoic rocks.

ORTHITE
Or"thite, n. Etym: [Gr. (Min.)