A taxonomic classification of fish characterized by unusual or atypical jaw structures.
From Greek 'allotrios' (strange/foreign) + 'gnathi' (jaw). This ichthyological term describes a group of fish with non-standard jaw anatomy. It's used in older fish classification systems though modern taxonomy has reorganized these groups.
Ancient ichthyologists literally looked at weird fish jaws and thought 'yeah, that's definitely a 'strange-jaw fish'—very scientific! Today we'd use molecular biology, but there's something charming about classification systems based on exactly what you can see.
Complete word intelligence in one call. Free tier — 50 lookups/day.