The correct GREEK plural, which would be used because the root of octopus is Greek, could be octopodes. However, in ENGLISH, people have started intuiting that words ending in “~us” pluralize to ~i, akin to cacti. So this isn’t about being a Latin rule, it’s actually an emergent English rule.
The correct GREEK plural, which would be used because the root of octopus is Greek, could be octopodes. However, in ENGLISH, people have started intuiting that words ending in “~us” pluralize to ~i, akin to cacti. So this isn’t about being a Latin rule, it’s actually an emergent English rule.