halieutics

Meanings

1. A treatise upon fish or the art of fishing, especially in Ancient Rome.
2. The art or practice of fishing.
3. evangelization; the spreading of Christianity across the world.

Etymology

From Latin halieuticus ("halieutic, of or about fishing"), from Ancient Greek ἁλιευτικός (halieutikós) (alieutikós, "of or about fishermen"), from ἁλιεύς (halieús, “fisherman”). The Christianity definition comes from the fish being a symbol of the Christian faith.