noun
aposematic coloration; warning coloration
A biological term for conspicuous colors or patterns that signal danger or unpalatability to predators. Rare; the more common synonym is 警戒色 (けいかいしょく).
See also: 警戒色
毒ガエルの警告色は、捕食者に危険を知らせる。
The warning coloration of poison dart frogs signals danger to predators.
In biological literature, 警戒色 is used more often than 警告色.