coelacanth means any of the class Actinistia of primitive lobe-finned fish in the order Coelacanthiformes—thought to have been extinct for 70 million years until a living specimen was discovered in 1938. Most species are large and plump and they all have bodies covered in tough elasmoid scales that act as armor.
coelacanth is pronounced /ˈsiː.lə.kænθ/.
Why “coelacanth” is a great word
A primitive lobe-finned fish of the order Coelacanthiformes, famously resurrected from presumed extinction by a living specimen caught off South Africa in 1938. Its name derives from the New Latin genus *Coelacanthus*, coined in 1839 by Louis Agassiz, from Ancient Greek κοῖλος (koîlos, "hollow") + ἄκανθα (ákantha, "spine"), referring to the hollow caudal fin rays. Unlike lungfish, a freshwater cousin with functional air-breathing organs, the coelacanth is a deep-sea dweller bearing only vestigial lungs; and unlike the generic term "living fossil," it is the specific, shocking proof of that concept—a Lazarus taxon made flesh. It is the shadow in the deep that defied the museum drawer, the archaic anatomy pulsing in a trawler’s net, the ghost from the Devonian that outlasted continents. To encounter one is to feel time buckle, a relic not petrified but swimming, and to know that the past is never quite as dead as we catalogue it to be.
Etymology
From the New Latin genus name Coelacanthus, from Ancient Greek κοῖλος (koîlos, “hollow”) + ἄκανθα (ákantha, “spine”), referring to the hollow caudal fin rays of the first fossil specimen described and named by Louis Agassiz in 1839.
noun
- Any of the class Actinistia of primitive lobe-finned fish in the order Coelacanthiformes—thought to have been extinct for 70 million years until a living specimen was discovered in 1938. Most species are large and plump and they all have bodies covered in tough elasmoid scales that act as armor.“Among them were ancient relatives of the piranhas and those popular aquarium fish the tetras, along with garfish and freshwater coelacanths, known as mawsonids.”
- Any of the class Actinistia of primitive lobe-finned fish in the order Coelacanthiformes—thought to have been extinct for 70 million years until a living specimen was discovered in 1938. Most species are large and plump and they all have bodies covered in tough elasmoid scales that act as armor.; Either of the two extant species in this group; the West Indian Ocean coelacanth (Latimeria chalumnae) or the Indonesian coelacanth (Latimeria menadoensis).
Words closest in meaning
By meaning, not spelling — each word's AI semantic fingerprint, nearest first.
- dinosaur 75% match — Those animals of the clade Dinosauria that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct. vs coelacanth →
- remora 73% match — Any of various elongate fish from the family Echeneidae, the dorsal fin of which is in the form of a suction disc that can take a firm hold against the skin of larger marine animals. vs coelacanth →
- stromatolite 73% match — A laminated, columnar, rock-like structure constituting a large share of all fossils from 3.5 to 0.5 billion years ago, with some still being formed at present, some or all of which result from the deposit of minerals by microorganisms such as cyanobacteria. vs coelacanth →
- pterodactyl 73% match — A pterosaur of the genus Pterodactylus. vs coelacanth →
- incognitum 73% match — An American mammoth or mastodon, especially when presumed extant. vs coelacanth →
- antediluvian 73% match — Belonging or pertaining to, or existing in, the time prior to the great flood described in Genesis, or (by extension) to a great or destructive flood or deluge described in other mythologies. vs coelacanth →
- caviar 73% match — Roe of the sturgeon or of certain other large fish, considered a delicacy. vs coelacanth →
- tardigrade 73% match — Sluggish; moving slowly. vs coelacanth →