: a substance that forms a true solution and is capable of being crystallized

Word History

First Known Use

1839, in the meaning defined above

Time Traveler
The first known use of crystalloid was in 1839

Cite this Entry

“Crystalloid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crystalloid. Accessed 7 Jul. 2026.

Kids Definition

crystalloid

noun
: a substance that forms a true solution and is capable of being crystallized

Medical Definition

crystalloid

noun
1
: a substance that forms a true solution and is capable of being crystallized
2
: a particle of protein that has the properties of crystal and is found especially in oily seeds

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