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primordium

Pronunciation: /prʌɪˈmɔːdɪəm/

Definition of primordium

noun (plural primordia /-dɪə/)

Biology
  • an organ, structure, or tissue in the earliest stage of development: the primordium of the pituitary the axils of the leaf primordia

Origin:

late 19th century: from Latin, neuter of primordius 'original', from primus 'first' + ordiri 'begin'

primordium in other Oxford dictionaries

Definition of primordium in the US English dictionary

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