Pronunciation: [tˈɛɹədˌakta͡ɪl] (IPA) 
The word "pterodactyl" is commonly spelled with a "y" instead of an "e" at the end, but the correct spelling is actually "pterodactyle." The final "e" indicates that the word derives from Greek, where "ptero-" means "wing" and "-dactylos" means "finger." The "y" spelling likely arose due to the influence of other English words that end in "-yl," such as "style" or "methyl." The correct pronunciation is /ˈtɛrəˌdæktɪl/.
Pterodactyl is a noun referring to an extinct type of flying reptile belonging to the order Pterosauria, which existed during the Mesozoic era. The word is derived from the Greek term "pteron" meaning "wing" and "daktulos" meaning "finger." Pterodactyls are known for their unique wing structure, characterized by a elongated fourth finger which supported a membrane or wing-like structure that allowed them to soar and glide through the air.
Pterodactyls had a distinct appearance with elongated jaws filled with sharp teeth and a relatively small body size, varying from species to species. They were generally well-adapted for aerial locomotion, possessing lightweight yet sturdy bones, supported by a highly efficient musculature system. These reptiles likely relied on their wings for hunting and navigating their environment, primarily searching for prey in coastal and open marine areas.
The fossil record indicates that pterodactyls were widespread, with numerous species being discovered in various parts of the world. They lived alongside dinosaurs and evolved during the late Triassic period, becoming increasingly diverse during the Jurassic and Cretaceous periods. However, they eventually became extinct towards the end of the Cretaceous period, around 66 million years ago, along with many other prehistoric creatures, possibly due to a combination of climatic and environmental changes.
In geol., a fossil genus of flying reptiles capable of perching on trees, of hanging against perpendicular surfaces, and of standing firmly on the ground.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word pterodactyle is derived from the Greek words ptero meaning wing and daktylos meaning finger. The term was coined in the early 19th century to describe a group of flying reptiles from the Mesozoic Era known as pterosaurs. Ptero refers to the unique wings of these creatures, which were composed of a membrane of skin stretched between an elongated fourth finger and the body. Daktylos refers to the finger-like nature of this wing structure. Therefore, the etymology of pterodactyle essentially means winged finger.
