SEMIDIAMETERS
18
Scrabble
20
WWF
S(1) E(1) M(3) I(1) D(2) I(1) A(1) M(3) E(1) T(1) E(1) R(1) S(1)
NWL/TWL ✓ Collins ✓ WWF ✓
Definition
noun
- The apparent radius of a star etc, when viewed from Earth.
- A radius: half of a diameter.
Source: Wiktionary