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nyctitropism
nyc·tit·ro·pism
[
nik títtrə pìzzəm
]
noun
Definition:
leaves' changing position:
the movement of parts of a plant in response to light and temperature differences between night and day, e.g. the opening and closing of flowers and the folding together of leaves at night
[
Late 19th century. < Greek
nukt-
"night"
]
nyc·ti·tro·pic
[
nìktə trṓpik,
nìktə tróppik
]
adjective
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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