Hero-of-alexandria

[heer-oh] /ˈhɪər oʊ/

noun
1.
Classical Mythology. a priestess of Aphrodite who drowned herself after her lover Leander drowned while swimming the Hellespont to visit her.
2.
Also, Heron. (Hero of Alexandria) flourished 1st century a.d, Greek scientist.
/ˈhɪərəʊ/
noun (pl) -roes
1.
a man distinguished by exceptional courage, nobility, fortitude, etc
2.
a man who is idealized for possessing superior qualities in any field
3.
(classical myth) a being of extraordinary strength and courage, often the offspring of a mortal and a god, who is celebrated for his exploits
4.
the principal male character in a novel, play, etc
/ˈhɪərəʊ/
noun
1.
(Greek myth) a priestess of Aphrodite, who killed herself when her lover Leander drowned while swimming the Hellespont to visit her
/ˈhɪərəʊ/
noun
1.
1st century ad, Greek mathematician and inventor
n.

late 14c., “man of superhuman strength or physical courage,” from Latin heros “hero,” from Greek heros “demi-god” (a variant singular of which was heroe), originally “defender, protector,” from PIE root *ser- “to watch over, protect” (cf. Latin servare “to save, deliver, preserve, protect;” see observe). Meaning “man who exhibits great bravery” in any course of action is from 1660s. Sense of “chief male character in a play, story, etc.” first recorded 1690s. First record of hero-worship is from 1774.

1955, the New York term for a sandwich elsewhere called submarine, grinder, poor boy (New Orleans), or hoagie (Philadelphia); origin unknown, perhaps so called for its great size, or a folk etymology alteration of Greek gyro as a type of sandwich.
Hero
(hē’rō)
Greek mathematician who wrote on mechanics and invented many water-driven and steam-driven machines. He also developed a formula for determining the area of a triangle.