'stadium-like' is formed in modern English by combining the noun 'stadium' with the adjectival suffix '-like', where 'stadium' comes from Latin 'stadium' (from Greek 'stadion') and '-like' descends from Old English 'līc' meaning 'body' or 'form'.

'stadium' comes from Greek 'stadion' (a measure, racecourse), passed into Latin as 'stadium' and later into English as 'stadium'; the suffix '-like' comes from Old English 'līc' and developed into the productive modern suffix forming adjectives meaning 'similar to', resulting in the compound 'stadium-like' in modern usage.

Originally 'stadion' referred to a measure or a racecourse and 'stadium' later to an arena; '-like' originally meant 'body/form' and evolved into a marker of similarity. Combined, 'stadium-like' now means 'similar in appearance or character to a stadium.'