OPEROSITY
Op`er*os"i*ty, n. Etym: [L. operositas.]
Defn: Laboriousness. [R.] Bp. Hall.
OPEROUS
Op"er*ous, a.
Defn: Operose. [Obs.] Holder.
— Op"er*ous*ly, adv. [Obs.]
OPERTANEOUS
Op`er*ta"ne*ous, a. Etym: [L. opertaneus; operire to hide.]
Defn: Concealed; private. [R.]
OPETIDE
Ope"tide`, n. Etym: [Ope + tide.]
Defn: Open time; — applied to different things: (a) The early spring, or the time when flowers begin opening. [Archaic] Nares. (b) The time between Epiphany and Ash Wednesday wherein marriages were formerly solemnized publicly in churches. [Eng.] (c) The time after harvest when the common fields are open to all kinds of stock. [Prov.Eng.] Halliwell. [Written also opentide.]
OPHELIC
O*phel"ic, a. (Chem.)
Defn: Of, pertaining to, or designating, a substance (called ophelic acid) extracted from a plant (Ophelia) of the Gentian family as a bitter yellowish sirup, used in India as a febrifuge and tonic.