Dictionary

1wane

verb \ˈwān\

of the moon : to appear to become thinner or less full

: to become smaller or less : to decrease in size, amount, length, or quality

wanedwan·ing

Full Definition of WANE

intransitive verb
1
:  to decrease in size, extent, or degree :  dwindle: as
a :  to diminish in phase or intensity —used chiefly of the moon, other satellites, and inferior planets
b :  to become less brilliant or powerful :  dim
c :  to flow out :  ebb
2
:  to fall gradually from power, prosperity, or influence
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Origin of WANE

Middle English, from Old English wanian; akin to Old High German wanōn to wane, Old English wan wanting, deficient, Latin vanus empty, vain
First Known Use: before 12th century

Synonym Discussion of WANE

abate, subside, wane, ebb mean to die down in force or intensity. abate stresses the idea of progressive diminishing <the storm abated>. subside implies the ceasing of turbulence or agitation <the protests subsided after a few days>. wane suggests the fading or weakening of something good or impressive <waning enthusiasm>. ebb suggests the receding of something (as the tide) that commonly comes and goes <the ebbing of daylight>.

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wax, zenith

2wane

noun

Definition of WANE

1
a :  the act or process of waning <strength on the wane>
b :  a period or time of waning; specifically :  the period from the full moon to the new moon
2
[Middle English, defect, from Old English wana; akin to Old English wan deficient] :  a defect in lumber characterized by bark or a lack of wood at a corner or edge

First Known Use of WANE

14th century

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith
WANE[1] Defined for Kids

wane

verb \ˈwān\
wanedwan·ing

Definition of WANE for Kids

1
:  to grow smaller or less <His interest in the game was waning.> <The moon wanes.>
2
:  to grow shorter <The day is waning.>

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