perpetual
101Perpetual harvest greenhouse system — The Perpetual Harvest Greenhouse System (PHGS) is a concept for a greenhouse system that incorporates different new technologies,that have been proven to work separatelyFact|date=March 2008. The goal of this system is creating the most efficient… …
102perpetual motion — also perpetual motion N UNCOUNT The idea of perpetual motion is the idea of something continuing to move for ever without getting energy from anything else …
103perpetual edict — In Roman law, originally the term perpetual was merely opposed to occasional and was used to distinguish the general edicts of the praetors from the special edicts or orders which they issued in their judicial capacity. But under Hadrian the… …
104perpetual motion — noun motion that continues indefinitely without any external source of energy; impossible in practice because of friction • Hypernyms: ↑motion * * * perˌpetual ˈmotion 7 [perpetual motion] noun uncountable …
105perpetual fugues — Infinite In fi*nite, a. [L. infinitus: cf. F. infini. See {In } not, and {Finite}.] [1913 Webster] 1. Unlimited or boundless, in time or space; as, infinite duration or distance. [1913 Webster] Whatever is finite, as finite, will admit of no… …
106perpetual lever — Wheel Wheel (hw[=e]l), n. [OE. wheel, hweol, AS. hwe[ o]l, hweogul, hweowol; akin to D. wiel, Icel. hv[=e]l, Gr. ky klos, Skr. cakra; cf. Icel. hj[=o]l, Dan. hiul, Sw. hjul. [root]218. Cf. {Cycle}, {Cyclopedia}.] [1913 Webster] 1. A circular… …
107perpetual screw — Screw Screw (skr[udd]), n. [OE. scrue, OF. escroue, escroe, female screw, F. [ e]crou, L. scrobis a ditch, trench, in LL., the hole made by swine in rooting; cf. D. schroef a screw, G. schraube, Icel. skr[=u]fa.] 1. A cylinder, or a cylindrical… …
108Perpetual flower — A perpetual flower is a service for bereaved people whereby a company is engaged to maintain a floral display at the deceased s grave …
109perpetual motion machine — noun a hypothetical device that exhibits perpetual motion, especially one that does useful work with no input of energy …
110perpetual-motion — see perpetual motion …
