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light truck
light up
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light welterweight
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lighten (1)
lighten (2)
lighten up
lightening
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lightening

light·en·ing [ lt'ning ]


noun 
Definition:
 
stage in woman's pregnancy: the process or time during late pregnancy when the fetal head begins to descend into the mother's pelvis, resulting in a lessening of pressure on the diaphragm

[<lighten1]

Spelling Note

lightening or lightning? Do not confuse the spelling of lightening and lightning, which sound similar. Lightening is the present participle of either of the verbs lighten (as in lightening the load, lightening his hair), and as a verbal noun is also used with specific reference to a stage of pregnancy. The noun meaning "a flash of light in the sky during a storm" is spelled lightning (as in thunder and lightning), as is the corresponding adjective meaning "very fast or sudden" (as in with lightning speed).

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