ultravacuum
nounEtymology
From ultra- + vacuum.
Definitions
A nearly perfect vacuum
A nearly perfect vacuum; i.e. an almost or fully complete absence of matter, especially a gas at very low pressure.
- These lines are so-called “‘forbidden”’ lines which, in the crowded conditions even in a laboratory vacuum, would not appear; in the ultravacuum of a nebula, the atoms have no choice but to emit the forbidden energy.
The neighborhood
Vish — recursive loop
No curated loop yet for ultravacuum. Loops are being traced one word at a time while the ingestion pipeline matures.
sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA