'angioneoplasm' originates from Greek, specifically the words 'angeion' meaning 'vessel' and 'neoplasma' meaning 'new formation' or 'tumor'.

'angioneoplasm' was formed in modern medical English by combining the Greek roots 'angio-' (vessel) and 'neoplasm' (new growth or tumor).

Initially, it meant 'a new growth (tumor) of blood or lymphatic vessels', and this meaning has remained consistent in medical usage.