Idiom lo and behold (Definition of lo from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press) This disambiguation page lists articles associated with the title Lo. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article. The programme made great use of time-lapse photography and of the nearest available metaphor: lo, the white blanket later became 'a white duvet'. The meaning of LO is —used to call attention or to express wonder or surprise. How to use lo in a sentence. Low International Food is a must-visit in Hilo, especially if flying out. Their famous Rainbow Bread is a hit, with colorful slices that are perfect for gifts or snacks. The bread is soft and delicious, perfect for taking on the plane. LO definition: look! see! (frequently used in Biblical expressions; now usually used as an expression of surprise in the phraselo and behold ). See examples of lo used in a sentence. Lo: Directed by Travis Betz. With Jeremiah Birkett, Sarah Lassez, Ward Roberts, Devin Barry. A man uses a demon to save his girlfriend but the demon has a nefarious plan. Inherited from Middle English lo, loo, from Old English lā (“exclamation of surprise, grief, or joy”). Conflated in Middle English with lo! (interjection), a corruption of lok!, loke! (“look!”) (as in lo we!(look we!)). Cognate with Scots lo, lu (“lo”). See also look. Lo definition: Used to attract attention or to show surprise. Definition of lo exclamation in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.