aqua aerobics

noun, plural in form but singular or plural in construction

: aerobics performed in water and especially in a pool of shallow water

Popular for years with special-needs exercisers who enjoy the forgiving nature of movement in water, aqua aerobics is also attracting the ultra-fit.

—Carol Krucoff, Washington Post, 29 Apr. 1990

Word History

First Known Use

1979, in the meaning defined above

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!