Meaning of 水膨脹 in Japanese

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Definition of 水膨脹

みず(mizu) 【水】

(n) water (esp. cool, fresh water, e.g. drinking water) →Related words: 湯
水を加えてペースト状になるまでかき回しなさい。
Add water and stir to a paste.
fluid (esp. in an animal tissue); liquid
flood; floodwaters
(sumo) water offered to wrestlers just prior to a bout →Related words: 力水
(sumo) break granted to wrestlers engaged in a prolonged bout →Related words: 水入り

ぼうちょう(bouchou) 【膨張 ·膨脹 ·ぼう張】

(n, vs, adj-no) expansion; swelling; increase; growth
多くの天文学者は、宇宙は永遠に膨張してゆくものだと考えている。
Many astronomers assume that the universe expands infinitely.

すい(sui) 【水】