| noncohesive gold | Gold that will not weld because gases adsorb to the surface; some forms may be made cohesive by heat treatment; in dentistry, used as a direct filling material. (05 Mar 2000) |
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| noncomedogenic | Tending not to promote the formation of comedones. (05 Mar 2000) |
| noncommercial species | Tree species that do not normally develop into suitable trees for conventional forest products because of small size, poor form, or inferior quality. (05 Dec 1998) |
| noncommunicating hydrocele | Obliterated patent processus vaginalis; and isolated hydrocele. (05 Mar 2000) |
| noncommunicating hydrocephalus | Hydrocephalus secondary to a block in cerebrospinal fluid flow in the ventricular system or between the ventricular system and spinal canal. Synonym: noncommunicating hydrocephalus. (05 Mar 2000) |
| noncompetitive inhibition | <chemistry> A form of enzyme inhibition which cannot be reversed by increasing the amount of substrate in the reaction. (09 Oct 1997) |
| noncompetitive inhibitor | <chemistry> Reversible inhibition of an enzyme by a compound that binds at a site other than the substrate binding site. (18 Nov 1997) |
| noncomplementary role | A role that does not conform with the expectations and demands of other people. (05 Mar 2000) |
| noncondensing | <engineering> Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser. Source: Websters Dictionary (01 Mar 1998) |
| noncondensing, controlled extraction turbine | A turbine that bleeds part of the main steam flow at one (single extraction) or two (double extraction) points. (05 Dec 1998) |
| nonconducting | Not conducting; not transmitting a fluid or force; thus, in electricity, wax is a nonconducting substance. Source: Websters Dictionary (01 Mar 1998) |
| nonconductor | <physics> A substance which does not conduct, that is, convey or transmit, heat, electricity, sound, vibration, or the like, or which transmits them with difficulty; an insulator; as, wool is a nonconductor of heat; glass and dry wood are nonconductors of electricity. Source: Websters Dictionary (01 Mar 1998) |
| nonconjugative plasmid | A plasmid that cannot effect conjugation and self-transfer to another bacterium (bacterial strain); transfer depends upon mediation of another (and conjugative) plasmid. (05 Mar 2000) |
| nonconvulsive seizure | A seizure without clonic or tonic activity or other convulsive motor activity. See: complex partial seizure, absence seizure. (05 Mar 2000) |
| noncovalent bond | Bond in which electrons are not shared between atoms; e.g., electrostatic bond, hydrogen bond. (05 Mar 2000) |