'stemless' originates from the English word 'stem' combined with the suffix '-less', where 'stem' refers to the main structural part of a plant and '-less' indicates absence.

'stem' from Old English 'stemn' or 'stefn', meaning 'trunk of a tree', combined with '-less', a suffix of Germanic origin indicating 'without'.

Initially, it meant 'without a trunk or main part', but over time it evolved to mean 'lacking a stem or stalk'.