'latirostrate' originates from New Latin/modern scientific Latin, specifically the compound from Latin elements 'latus' and 'rostrum', where 'latus' meant 'broad' and 'rostrum' meant 'beak' or 'snout'.

'latirostrate' was formed in New Latin (scientific descriptions in the 18th–19th centuries) from Latin roots and entered specialist zoological and anatomical usage unchanged into modern English technical vocabulary.

Initially coined to denote 'having a broad rostrum' in taxonomic and descriptive contexts, its meaning has remained essentially the same and is still used in specialist descriptions to mean 'broad‑beaked'.