'hypoplastic' originates from New Latin, specifically the word 'hypoplasticus', where 'hypo-' meant 'under' and 'plastos' (from Greek) meant 'formed'.

'hypoplastic' changed from New Latin word 'hypoplasticus' (and is related to the noun 'hypoplasia') and eventually became the modern English adjective 'hypoplastic' used in medical terminology.

Initially, it meant 'pertaining to under-formation or underdevelopment', and over time it has remained specialized to mean 'relating to the incomplete development or reduced size of an organ or tissue'.