[phonypc]

I don't think that works. The lay persons definition is necessarily derived from the scientific one. "Dinosaur" wouldn't exist as a word or concept without scientific study.

Sorry to keep bringing up the same analogy, but do you also think it would be pedantic to correct "humans evolved from primates" to "humans are primates"?

[throwaway894345]

The analogy doesn't apply because "primates" doesn't have a colloquial definition that excludes humans. "fish" or "reptiles" would be better examples. "Humans didn't evolve from reptiles; they are reptiles". I don't find it pertinent that the colloquial definition wouldn't exist without scientific study.

[phonypc]

Fish and reptile aren't comparable terms to dinosaur. They started as colloquial terms and (as colloquially used) refer to groups based on traits, not phylogeny. Humans actually are not evolved from the phylogenetic group closest in content to "reptiles."

I guess you could argue the colloquial definition of dinosaur is similarly trait based, but even then... an ostrich is practically a small toothless T. rex.