rigid

rigid
rigidity, rigidness, n.rigidly, adv.
/rij"id/, adj.
1. stiff or unyielding; not pliant or flexible; hard: a rigid strip of metal.
2. firmly fixed or set.
3. inflexible, strict, or severe: a rigid disciplinarian; rigid rules of social behavior.
4. exacting; thorough; rigorous: a rigid examination.
5. so as to meet precise standards; stringent: lenses ground to rigid specifications.
6. Mech. of, pertaining to, or noting a body in which the distance between any pair of points remains fixed under all forces; having infinite values for its shear modulus, bulk modulus, and Young's modulus.
7. Aeron.
a. (of an airship or dirigible) having a form maintained by a stiff, unyielding structure contained within the envelope.
b. pertaining to a helicopter rotor that is held fixedly at its root.
[1530-40; < L rigidus, equiv. to rig(ere) to be stiff, stiffen + -idus -ID4]
Syn. 1. unbending, firm, inflexible. 2. immovable, static. 3. austere, stern, unyielding. See strict. 4, 5. demanding.
Ant. 1. elastic. 3. lax.

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Universalium. 2010.

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