Associations to the word «Semidiameter»

Wiktionary

SEMIDIAMETER, noun. (astronomy) The apparent radius of a star etc, when viewed from Earth.
SEMIDIAMETER, noun. (archaic) A radius: half of a diameter.

Dictionary definition

SEMIDIAMETER, noun. The apparent radius of a celestial body when viewed as a disc from the earth.

Wise words

Four things come not back. The spoken word, the sped arrow, the past life, ad the neglected opportunity.
Arabian Proverb