‖conj. or adv. [ L. ] Therefore; consequently; -- often used in a jocular way. Shak. [ 1913 Webster ]

n. vitamin D2, one of the D vitamins, a group of related substances that prevent rickets.
Syn. -- vitamin D, calciferol, cholecarciferol, D. [ WordNet 1.5 +PJC ]

n. [ Gr. &unr_; work + -graph. ] An instrument for measuring and recording the work done by a single muscle or set of muscles, the rate of fatigue, etc. -- Er`go*graph"ic a. [Webster 1913 Suppl.]

n. [ Gr. &unr_; work + -meter. ] (Physics) A device for measuring, or an instrument for indicating, energy expended or work done; a dynamometer. -- Er`go*met"ric a. [Webster 1913 Suppl.]

n. [ NL., fr. Gr. &unr_; work. ] (Physics) (a) Work, measured in terms of the quantity of heat to which it is equivalent. (b) same as Erg. [ Webster 1913 Suppl. ]

n. biological science applied to study the relation between workers and their environments.
Syn. -- biotechnology, bioengineering. [ WordNet 1.5 ]

n. a plant sterol that is converted into vitamin D by ultraviolet radiation. [ WordNet 1.5 ]

n. [ F. ergot, argot, lit., a spur. ] 1. A diseased condition of rye and other cereals, in which the grains become black, and often spur-shaped. It is caused by a parasitic fungus, Claviceps purpurea. [ 1913 Webster ]

2. The mycelium or spawn of this fungus infecting grains of rye and wheat. It is a powerful remedial agent, and also a dangerous poison, and is used as a means of hastening childbirth, and to arrest bleeding. [ 1913 Webster ]

3. (Far.) A stub, like soft horn, about the size of a chestnut, situated behind and below the pastern joint. [ 1913 Webster ]

4. (Anat.) See 2d Calcar, 3 (b). [ 1913 Webster ]

a. Pertaining to, or derived from, ergot; as, ergotic acid. [ 1913 Webster ]

n. (Med.) An extract made from ergot. [ 1913 Webster ]