/luyt"n ing/, n. Med.
the descent of the uterus into the pelvic cavity, occurring toward the end of pregnancy, changing the contour of the abdomen and facilitating breathing by lessening pressure under the diaphragm.
[1520-30; LIGHTEN2 + -ING1]

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Universalium. 2010.

Look at other dictionaries:

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  • lightening — index abatement (reduction), mitigation, mollification Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • lightening — the shedding of light, mid 14c., from LIGHTEN (Cf. lighten) (v.2). Meaning alleviation of weight (literal and figurative) is from 1520s, from LIGHTEN (Cf. lighten) (v.1) …   Etymology dictionary

  • lightening — lightning, lightening Lightning is the spelling with reference to electrical flashes in the sky (thunder and lightning), whereas lightening is a form of the verb lighten • (I welcome the lightening of this burden that s imposed on councils… …   Modern English usage

  • Lightening — Not to be confused with a discharge of atmospheric electricity, lightening refers to the sensation that a pregnant woman feels when the baby drops. This is the time when the presenting (lowermost) part of the fetus descends into the maternal… …   Medical dictionary

  • Lightening — Lighten Light en (l[imac]t n), v. i. [imp. & p. p. {Lightened} (l[imac]t nd); p. pr. & vb. n. {Lightening}.] [OE. lightenen. See {Light} to kindle, illuminate.] 1. To burst forth or dart, as lightning; to shine with, or like, lightning; to… …   The Collaborative International Dictionary of English

  • lightening — See lightening, lightning …   Dictionary of problem words and expressions

  • lightening — palengvinimas statusas T sritis Gynyba apibrėžtis Operacija (paprastai esant inkarvietėje) naftos kroviniui perkelti iš didelio tanklaivio į mažesnį, kad sumažėtų didelio tanklaivio grimzlė ir jis galėtų įplaukti į uostą. atitikmenys: angl.… …   NATO terminų aiškinamasis žodynas

  • lightening — The operation (normally carried out at anchor) of transferring crude oil cargo from a large tanker to a smaller tanker, so reducing the draft of the larger tanker to enable it to enter port …   Military dictionary

  • lightening — noun a) The sensation caused by the descent of the uterus into the pelvic cavity before the onset of labour b) The removal of cargo (especially crude oil) from a vessel in order to reduce its draft …   Wiktionary

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