progenies

Latin progenies means 'offspring, descendants, race,' from progignere ('to beget forth'), from pro- ('forward') and gignere ('to beget'). The word emphasizes directionality: progeny move forward from the progenitor. They are not copies. They are projections. The prefix pro- carries the future in it.

Vergil used progenies in the Aeneid (~19 BCE) for the line of descendants that would flow from Aeneas to Augustus — the imperial propaganda that traced Rome's rulers back to Troy and, through Venus, to the gods. The progeny of Aeneas were Rome's destiny. The word carried political and mythological weight.

English borrowed progeny from Old French progenie in the 1300s. The word remained formal — people did not call their children 'my progeny' in casual conversation. It appeared in legal documents (succession and inheritance), scientific writing (the offspring of experimental organisms), and literary contexts (the descendants of great houses).

In genetics, 'progeny testing' evaluates an organism's breeding value by studying its offspring. The technique is standard in animal husbandry — a bull's genetic quality is assessed by the milk production of his daughters. The word that Vergil used for Rome's divine destiny now describes the milk output of dairy cows. The forward-born has been quantified.