lo

¹ American  

[loh] / loʊ /

interjection

1. look! see! (frequently used in Biblical expressions; now usually used as an expression of surprise in the phraselo and behold ).

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lo ² American  

[loh] / loʊ /

adjective

1. an informal, simplified spelling of low, used especially in labeling or advertising commercial products.

   lo calorie.

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LO ³ American  

abbreviation

1. little one (used, especially by women, in digital communications to refer to one's infant or young child).

   We've been cloth diapering since my LO hit 10 pounds, about 6 months now.

2. loved one (used, especially by women, in digital communications to refer to one's romantic partner or spouse).

   I realized that my LO and I really didn't have much in common in terms of interests and basic values that could have held us together.

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LO ¹ British  

abbreviation

1. hello

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lo ² British  

/ ləʊ /

interjection

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

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Etymology

Origin of lo¹

before 900; Middle English; conflation of lo exclamation of surprise, grief, or joy, O! ( Old English lā; la ² ) and lo, shortened form of loke ( Old English lōca ), imperative of loken to look

Origin of LO³

First recorded in 2000–05 LO for def. 1

Example Sentences

"And lo and behold, 12 hours later we had the rough version of this thing."

From BBC • Mar. 6, 2026

UU. contra el mundo» en el Intuit Dome, se le preguntó a James si tenía alguna idea de lo que quería hacer la próxima temporada.

From Los Angeles Times • Feb. 15, 2026

Y lo consiguió, anotando 31 puntos en solo 12 minutos en la victoria del Team Stripes por 48-45 sobre el Team World, la actuación dominante del día.

From Los Angeles Times • Feb. 15, 2026

“During the financial crisis, governments around the world put the printing presses on and everyone said, ‘Oh, lo and behold, nothing’s happened.

From The Wall Street Journal • Jan. 2, 2026

He put the accent on the ki in kilometers, instead of the lo, which was cool.

From "Darius the Great Is Not Okay" by Adib Khorram