Astigmatic :: Astigmatic (a.) Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses..
Astigmatism :: Astigmatism (n.) A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision..
Castigate :: Castigate (v. t.) To punish by stripes; to chastise by blows; to chasten; also, to chastise verbally; to reprove; to criticise severely..
Castigate :: Castigate (v. t.) To emend; to correct.
Fustigation :: Fustigation (n.) A punishment by beating with a stick or club; cudgeling.
Gastight :: Gastight (a.) So tightly fitted as to preclude the escape of gas; impervious to gas.
Instigate :: Instigate (v. t.) To goad or urge forward; to set on; to provoke; to incite; -- used chiefly with reference to evil actions; as to instigate one to a crime.
Investigate :: Investigate (v. t.) To follow up step by step by patient inquiry or observation; to trace or track mentally; to search into; to inquire and examine into with care and accuracy; to find out by careful inquisition; as, to investigate the causes of natural phenomena..
Investigate :: Investigate (v. i.) To pursue a course of investigation and study; to make investigation.