(US, meteorology) A scale used to rate the intensity of a tornado; now superseded by the Enhanced Fujita scale.

A ruler marked with a range of calibrated scales (ratios) for drawing and measuring from reduced scale drawings, such as blueprints and floor plans.

(idiomatic, intransitive) To change the fortunes, either positively or negatively. / (idiomatic, intransitive, used with "at") To weigh (have a certain weight).

plural of scallop theorem

Having scabs. / Of or pertaining to scabies.

Any of various herbaceous plants of the genus Scabiosa. / Any of several plants of the genus Knautia.

(physics) The scale at which quantum-mechanical effects become significant to depicting spacetime & other gravitational phenomena, typically defined as being on the order of one Planck length (~10⁻³⁵ m).

(linear algebra) Multiplication of a vector by a scalar (which belongs to the vector space's field of scalars). / (abstract algebra) multiplication of a module element by a ring element

plural of scaly anteater

plural of scalene triangle