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lo1

[loh]
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interjection
  1. look! see! (frequently used in Biblical expressions; now usually used as an expression of surprise in the phrase lo and behold).

Origin of lo1

before 900; Middle English; conflation of lo exclamation of surprise, grief, or joy, O! (Old English lā; see la2) and lo, shortened form of loke (Old English lōca), imperative of loken to look

lo2

[loh]
adjective
  1. an informal, simplified spelling of low1, used especially in labeling or advertising commercial products: lo calorie.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for lo

lo

interjection
  1. look! see! (now often in the phrase lo and behold)

Word Origin

Old English

LO

abbreviation for
  1. hello
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for lo

interj.

early 13c., from Old English la, exclamation of surprise, grief, or joy; influenced in Middle English by lo!, short for lok "look!" imperative of loken "to look" (see look (v.)). Expression lo and behold attested by 1779.

Online Etymology Dictionary, © 2010 Douglas Harper