sub·​ir·​ri·​ga·​tion ˌsəb-ˌir-ə-ˈgā-shən How to pronounce subirrigation (audio)
: irrigation below the surface (as by a periodic rise of the water table or by a system of underground porous pipes)
subirrigate transitive verb

Word History

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of subirrigation was in 1835

Dictionary Entries Near subirrigation

Cite this Entry

“Subirrigation.” Dictionary, Merriam-Webster, Accessed 4 Feb. 2023.

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