ETA
/ˈiːtə/
3
Scrabble
3
WWF
E(1) T(1) A(1)
NWL/TWL ✓ Collins ✓ WWF ✓
Definition
/ˈiːtə/
noun
- The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.
- A kind of electrically neutral meson having zero spin and isospin.
Source: Wiktionary