Aforethought :: Aforethought (a.) Premeditated; prepense; previously in mind; designed; as, malice aforethought, which is required to constitute murder..
Parethmoid :: Parethmoid (a.) Near or beside the ethmoid bone or cartilage; -- applied especially to a pair of bones in the nasal region of some fishes, and to the ethmoturbinals in some higher animals..
Plymouth Brethren :: Plymouth Brethren () The members of a religious sect which first appeared at Plymouth, England, about 1830. They protest against sectarianism, and reject all official ministry or clergy. Also called Brethren, Christian Brethren, Plymouthists, etc. The Darbyites are a division of the Brethren..
Pyrethrin :: Pyrethrin (n.) A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor..
Pyrethrine :: Pyrethrine (n.) An alkaloid extracted from the root of the pellitory of Spain (Anacyclus pyrethrum).
Rethor :: Rethor (n.) A rhetorician; a careful writer.
Urethane :: Urethane (n.) A white crystalline substance, NH2.CO.OC2H5, produced by the action of ammonia on ethyl carbonate. It is used somewhat in medicine as a hypnotic. By extension, any one of the series of related substances of which urethane proper is the type..
Urethra :: Urethra (n.) The canal by which the urine is conducted from the bladder and discharged.
Urethral :: Urethral (a.) Of or pertaining to the urethra.
Urethritis :: Urethritis (n.) Inflammation of the urethra.
Urethroplasty :: Urethroplasty (n.) An operation for the repair of an injury or a defect in the walls of the urethra.
Urethroscope :: Urethroscope (n.) An instrument for viewing the interior of the urethra.