serotonin

Pronounced: ser-uh-TOE-nihn (alt: seer-uh-TOE-nihn), noun

Notes: I had just an approximate idea of the meaning. Do you know it?

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Yesterday’s word

The word peregrination is “traveling place to place; also a course of travel, especially on foot”

First usage

Our word came into English in the late 1400s

Background / Comments

I have run across our word in reading, but I don’t remember anything about where it may have been. Rex Stout (the author of the Nero Wolfe books) often uses big words, but I don’t think it was one of those books. Our word came from the Latin word peregrinari (to travel abroad), which comes from peregrinus (foreign), which came from peregre (abroad), which is made up of per- (through) and ager (field; country).