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plano-
plano-concave
plano-convex
planogamete
planosol
plant
plant agreement
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plant hormone
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Plantagenet
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plant hormone
plant hor·mone (plural plant hor·mones)


noun 
Definition:
 
growth-regulating hormone in plants: a hormone produced naturally by plants that activates or regulates their growth, or a synthetic equivalent used to promote growth in cultivated plants
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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