irradiation
/ɪˌɹeɪdiˈeɪʃən/
Word Rarity
Rare
Frequency: 3.09 in modern English
12
Scrabble Score
11
Letters
5
Syllables
7
Unique Chars
Meaning
noun
The apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is, especially when a little out of focus.
Countable; Obsolete; Uncountable