primordium noun. [prʌɪ'mɔ:dɪǝm] Pl. -ia [-ɪǝ]. L16.
[Latin, use as noun of neut. of primordius original, from PRIMUS adjective + ordiri begin: see -IUM.]
1. The very beginning, the earliest stage; an introduction; a source, an origin. L16.

2. Botany & Embryology. An organ, structure, etc., in its earliest stage of development; = ANLAGE. L19.

[TahlilGaran] English Dictionary ▲