The name octopus came from the Greek okto (eight) and pous (foot).
That is the correct spelling of "octopus" (a tentacled cephalopod sea creature).
In Greek, the word for octopus is "χταπόδι" (pronounced htapódi). This term is commonly used in both everyday language and culinary contexts. The word derives from the ancient Greek "ὀκτώπους" (októpos), which means "eight-footed," reflecting the octopus's distinctive eight arms.
The Scientific name for the general Octopus is Octopus Vulgaris.The Scientific name for the common squid is Loligo opalescens.Both octopus and squid (and cuttlefish) are cephalopods.
Common Octopus
It is Greek for eight, as in the eight tentacles of an octopus.
The scientific name for octopus is Octopus vulgaris.
The North Pacific Giant Octopus.
Henry the Octopus
The word "pus" in "octopus" comes from the Greek word "pous," meaning "foot." This refers to the octopus's tentacles, which are typically referred to as arms or legs.
octopi Octopi is not incorrect, but is not technically correct either. Octopi is Latin and is the correct plural of Octopus, but the word octopus is not Latin. It is a Greek word. And the correct plural of octopus in Greek is "octopedes". Now the real kicker is that even though it's a Greek word, any word that is used in the English language is now an English word. So the Greek or Latin plural is technically incorrect. The official, proper pronunciation is -- octopuses. Source: Merriam-Webster
octi