counterilluminate
English
editEtymology
editFrom counter- + illuminate.
Verb
editcounterilluminate (third-person singular simple present counterilluminates, present participle counterilluminating, simple past and past participle counterilluminated)
- (of a fish) To use photophores on the underside of the body so as to hide a dark silhouette that would otherwise be seen from below by predators