English word thermonuclear comes from English nuclear, English thermo- (Heat.)
| Dictionary entry | Language | Definition |
|---|---|---|
| nuclear | English (eng) | (biology) Pertaining to the nucleus of a cell. [from 19th c.]. (by extension, metaphoric, of a solution or response) Involving the destruction of something.. Involving energy released by nuclear reactions (fission, fusion, radioactive decay). [from 20th c.]. Of a weapon: deriving its force from rapid release of energy through nuclear reactions. [from 20th c.]. Pertaining to a centre around [...] |
| thermo- | English (eng) | Heat. |
| thermonuclear | English (eng) | Of, or relating to the fusion of atomic nuclei at high temperatures.. Of, or relating to the use of atomic weapons based on such fusion, especially as distinguished from those based on fission. |