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• lo
  lo

  interjection

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

  abbreviation

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

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; see 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

While she used to regularly order combo meals at KFC and lo mein at Chinese restaurants, she now favors Chipotle, where she is able to customize bowls to specific calories.

From The Wall Street Journal • May 13, 2026

He tells me, I try that, it works for me, and lo and behold when the race comes, I might beat him.

From BBC • Feb. 11, 2026

Esta vez fue Xavier Smith quien falló un punt y Dareke Young lo recuperó en la yarda 17 de los Rams.

From Los Angeles Times • Jan. 26, 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

Just when we considered ourselves fully prepared and were fixing to depart, lo and behold, we learned that the Pan American Airline would only allow forty-four pounds to be carried across the ocean.

From "The Poisonwood Bible" by Barbara Kingsolver