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lumber (2)
lumberjack
lumberjacket
lumberman
lumberyard
lumen
luminaire
luminance
luminaria
luminary
luminesce
luminescence
luminiferous
luminol
luminosity
luminous
luminous energy
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lumpectomy

lump·ec·to·my [ lum péktəmee ] (plural lump·ec·to·mies)


noun 
Definition:
 
removal of breast tumor: a surgical operation for breast cancer in which the surgery is limited to the removal of the visible and palpable tumor only

[Late 20th century. <lump1]
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