Search the Dictionary

See Didymium.

A rare metallic substance usually associated with the metal cerium; -- hence its name. It was formerly supposed to be an element, but has since been found to consist of two simpler elementary substances, neodymium and praseodymium. See Neodymium, and Praseodymium.

Growing in pairs or twins.

An oblong vermiform mass on the dorsal side of the testicle, composed of numerous convolutions of the excretory duct of that organ. -- Ep`i*did"y*mal, a.

Inflammation of the epididymis, one of the common results of gonorrhea.

A small body containing convoluted tubules, situated near the epididymis in man and some other animals, and supposed to be a remnant of the anterior part of the Wolffian body.

), one of the small pedunculated bodies found between the testicle and the head of the epididymis, and supposed to be a remnant of the Müllerian duct.

linite, orthite, etc., and was so named from the difficulty of separating it from cerium, didymium, and other rare elements with which it is usually associated. Atomic weight 138.5. Symbol La. [Formerly written also lanthanium.]

An elementary substance which forms one of the constituents of didymium. Symbol Nd. Atomic weight 140.8.

An American aromatic herb (Monarda didyma), with showy, bright red, labiate flowers.

A small mass of tubules near the ovary in some animals, and corresponding with the parepididymis of the male.

The part of the epididymis; or the corresponding part of the excretory duct of the testicle, which is derived from the Wolffian body.

An elementary substance, one of the constituents of didymium; - - so called from the green color of its salts. Symbol Ps. Atomic weight 143.6.