A theoretical or hypothetical growth-promoting substance or hormone; a factor that stimulates cellular growth and development.
From Greek 'auxis' (growth) + '-mone' (agent, as in hormone). A term occasionally used in developmental biology to refer to unidentified growth-promoting factors.
Scientists once used 'auximone' as a placeholder name for mysterious growth factors they detected but couldn't identify—once they discovered specific hormones like auxins and gibberellins, more specific names took over.
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