Term: nuclear rocket: a rocket engine in which a nuclear reactor is used to heat a propellant
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: preformation: a theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: skimming: the act of removing floating material from the surface of a liquid
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: car battery: a lead-acid storage battery in a motor vehicle; usually a 12-volt battery of six cells; the heart of the car's electrical system
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: catching: becoming infected
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: geoglossum: type genus of the Geoglossaceae comprising the earthtongues
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: breakthrough: making an important discovery
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: sen: a fractional monetary unit of Japan and Indonesia and Cambodia; equal to one hundredth of a yen or rupiah or riel
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: pioneer: someone who helps to open up a new line of research or technology or art
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: mantispid: insect that resembles a mantis; larvae are parasites in the nests of spiders and wasps
Broader: engine: motor that converts thermal energy to mechanical work | Unrelated: methotrexate: toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis