| avenger | 1. One who avenges or vindicates; as, an avenger of blood. 2. One who takes vengeance. Source: Websters Dictionary (01 Mar 1998) |
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| avengeress | A female avenger. Source: Websters Dictionary (01 Mar 1998) |
| avenin | <plant biology> A prolamine, about 25% l-glutamic acid residues, found in oats (Avena) and in various legumes; considered highly nutritious. Synonym: legumin, plant casein. (05 Mar 2000) |
| avenious | <botany> Being without veins or nerves, as the leaves of certain plants. Origin: Pref. A- + L. Vena a vein. Source: Websters Dictionary (01 Mar 1998) |
| avens | <botany> A plant of the genus Geum, especially. Geum urbanum, or herb bennet. Origin: OF. Avence. Source: Websters Dictionary (01 Mar 1998) |
| aventurine | 1. <botany> A kind of glass, containing gold-coloured spangles. It was produced in the first place by the accidental (par aventure) dropping of some brass filings into a pot of melted glass. 2. <chemical> A variety of translucent quartz, spangled throughout with scales of yellow mica. ~ feldspar, a variety of oligoclase with internal firelike reflections due to the presence of minute crystals, probably of hematite; sunstone. Origin: F. Aventurine: cf. It. Avventurino. Source: Websters Dictionary (01 Mar 1998) |
| avenue | 1. A way or opening for entrance into a place; a passage by which a place may by reached; a way of approach or of exit. "The avenues leading to the city by land." "On every side were expanding new avenues of inquiry." (Milman) 2. The principal walk or approach to a house which is withdrawn from the road, especially, such approach bordered on each side by trees; any broad passageway thus bordered. "An avenue of tall elms and branching chestnuts." (W. Black) 3. A broad street; as, the Fifth Avenue in new York. Origin: F. Avenue, fr. Avenir to come to, L. Advenire. See Advene. Source: Websters Dictionary (01 Mar 1998) |
| average | <statistics> A value that represents the sum of values divided by the number of values in the set. It represents or summarises the relevant features of a set of values. Origin: M.E. Averays, loss from damage to ship or cargo, fr. It. Avaris, fr. Ar. 'awariya, damaged goods, + damage (05 Mar 2000) |
| average flow rate | <physiology> The flow rate determined by dividing the total volume passed in a time period divided by the time period, usually quoted in mls per minute. (05 Mar 2000) |
| average megawatt | <physics> One megawatt of capacity produced continuously over a period of one year. 1 MWa = 1 MW x 8760 hours/year = 8,760 Mwh = 8,760,000 kWh. Acronym: MWa (05 Dec 1998) |
| average pulse magnitude | <physics> The amplitude of pulse averaged throughout its duration; identical with peak amplitude for a square wave or pulse without droop. (05 Mar 2000) |
| avermectin B2 O-methyltransferase | <enzyme> Converts avermectin b component to avermectin a components during avermectin biosynthesis Registry number: EC 2.1.1.- (26 Jun 1999) |
| averruncator | <botany> An instrument for pruning trees, consisting of two blades, or a blade and a hook, fixed on the end of a long rod. Origin: Cf. Aberuncator. Source: Websters Dictionary (01 Mar 1998) |
| aversion therapy | <psychology> A form of behaviour therapy that pairs an unpleasant stimulus with undesirable behaviour(s) so that the patient learns to avoid the latter. See: aversive training. (05 Mar 2000) |
| aversive behaviour | <psychology> The movement of an organism away from a certain type of stimulus, such as electric shock. Compare: appetitive behaviour. Synonym: ambient behaviour. (05 Mar 2000) |