delta ray

1. 1.

   an electron ejected from matter by ionizing radiation

   Broaderelectron

Questions about delta ray

What does delta ray mean?

delta ray means "an electron ejected from matter by ionizing radiation".

Is delta ray a common word?

delta ray is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.