quaternate

[ kwot-er-neyt, kwuh-tur-nit ]
/ ˈkwɒt ərˌneɪt, kwəˈtɜr nɪt /

adjective

arranged in or consisting of four parts, as the leaves of certain plants.

Origin of quaternate

1745–55; < Latin quatern(ī) four at a time + -ate1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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