| no-threshold concept | That the biologic effect of radiation is proportional to dose, even for minutely small doses. (05 Mar 2000) |
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| concept | 1. An abstract idea or notion. 2. An explanatory variable or principle in a scientific system. Synonym: conception. Origin: L. Conceptum, something understood, pp. Ntr. Of concipio, to receive, apprehend (05 Mar 2000) |
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| concept formation | A cognitive process involving the formation of ideas generalised from the knowledge of qualities, aspects, and relations of objects. (12 Dec 1998) |
| self concept | A person's view of himself. (12 Dec 1998) |