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helicon
helicopter
helicopter gunship
helicopter view
heliculture
helideck
helio-
heliocentric
heliocentric parallax
heliodor
heliograph
heliolatry
heliolithic
heliometer
heliopause
heliophyte
Heliopolis
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heliotropism
he·li·ot·ro·pism [ hlee óttrə pìzzəm ]


noun 
Definition:
 
response to sunlight: growth toward sunlight by a plant.
See also  phototropism

he·li·o·trop·ic [ hlee ə tróppik ] adjective
he·li·o·trop·i·cal adjective
he·li·o·trop·i·cal·ly adverb
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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