| hop | 1. A leap on one leg, as of a boy; a leap, as of a toad; a jump; a spring. 2. A dance; especially, an informal dance of ball. Hop, skip (or step), and jump, a game or athletic sport in which the participants cover as much ground as possible by a hop, stride, and jump in succession. 1. <botany> A climbing plant (Humulus Lupulus), having a long, twining, annual stalk. It is cultivated for its fruit (hops). 2. The catkin or strobilaceous fruit of the hop, much used in brewing to give a bitter taste. 3. The fruit of the dog-rose. See Hip. Hop back. See 1st Back. <botany> Hop clover, the climbing vine or stalk of the hop. Origin: OE. Hoppe; akin to D. Hop, hoppe, OHG. Hopfo, G. Hopfen; cf. LL. Hupa, W. Hopez, Armor. Houpez, and Icel. Humall, SW. & Dan. Humle. Source: Websters Dictionary (01 Mar 1998) |
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| SEM | A statistical index of the probability that a given sample mean is representative of the mean of the population from which the sample was drawn. (05 Mar 2000) |
| sem 5 | <molecular biology> Cell signalling gene of Caenorhabditis elegans that encodes a protein (228 residues) with SH2 and SH3 domains and that acts in vulval development and sex myoblast migration. (18 Nov 1997) |