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IMO

American

Also imo, or IMHO

abbreviation

in my (honest/humble) opinion.

IMO ¹ British

abbreviation

text messaging in my opinion
International Maritime Organization

"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

Imo ² British

/ ˈiːməʊ /

noun

a state of SE Nigeria. Capital: Owerri. Pop:3 934 899 (2006). Area: 5100 sq km (1969 sq miles)

"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

Etymology

Origin of IMO

First recorded in 1980–85; from its use in digital communications

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Around 20,000 seafarers remained stranded on some 3,200 vessels west of the Strait of Hormuz, according to the IMO.

From Barron's • Mar. 20, 2026

The IMO head said he "will take this instruction very seriously", calling the measure "of particular operational importance" which showed "we value seafarers".

From Barron's • Mar. 19, 2026

Last year abandoned merchant navy crews around the world were owed a total of $25.8m, according to data from two UN agencies, the IMO, and the International Labour Organization.

From BBC • Feb. 8, 2026

Last year, it obtained a new IMO number in a move that analysts said was almost unheard of.

From BBC • Jan. 23, 2026

The IMO is a proponent of a technology to apply encrypted "digital signatures" to electronic bills of lading.

From Crime and Corruption by Vaknin, Samuel

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023