| gr. | grain; 1 gr. = 0.0648 gm |
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| gr | grade; graft; grain; gram; gravity; gray; gross |
| AGD | Argyrophilic grain disease |
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| aleurone grain | <plant biology> Membrane bounded storage granule within plant cells that usually contains protein. May be an aleuroplast or just a specialised vacuole. (18 Nov 1997) |
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| aleurone | <botany> An albuminoid substance which occurs in minute grains ("protein granules") in maturing seeds and tubers; supposed to be a modification of protoplasm. Origin: Gr. Flour. Source: Websters Dictionary (01 Mar 1998) |
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| grain | <botany> A fruit characteristic of grasses (such as rice), pollen grain, a microspore of a seed plant, or the partially developed gametophyte formed from it. (09 Oct 1997) |
| grain alcohol | <chemical> An organic chemical containing one or more hydroxyl groups. Alcohols can be liquids, semisolids or solids at room temperature. Common alcohols include ethanol (the type found in alcoholic beverages) methanol (found in methylated spirit and can cause blindness and other nervous system damage if ingested) and propanol. (06 May 1997) |
| grain itch | A cutaneous eruption occasionally noted in farmers and grain handlers, caused by the action of the mite Pyemotes ventricosus. (05 Mar 2000) |
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