the word 'ursine' is a direct borrowing from the latin adjective 'ursinus', which means 'of a bear'. this latin term is itself derived from 'ursus', the latin word for bear. the latin 'ursus' can be traced back to the proto-indo-european root h₂ŕ̥tḱos, meaning 'bear', which also gave rise to similar words in other indo-european languages, such as ancient greek 'arktos' and sanskrit 'ṛkṣa'. the suffix '-ine', of latin origin, is commonly used in english to form adjectives indicating a characteristic or resemblance. thus, the literal construction 'bear-like' perfectly captures the modern meaning of pertaining to or resembling a bear.

Structure: urs (bear) + ine (adjective suffix) urs (from latin 'ursus', meaning 'bear'); ine (a latin-derived suffix forming adjectives meaning 'of or pertaining to', 'like').