SRM

SRM (countable and uncountable, plural SRMs)

1. Initialism of solid rocket motor.
2. (geoengineering, uncountable) Initialism of solar radiation management.
   • 2018, Andy Parker, Peter J. Irvine, “The Risk of Termination Shock From Solar Geoengineering”, in Earth's Future‎, volume 6, number 3, →DOI, →ISSN, pages 456–467:

     If a larger SRM deployment were phased out sufficiently slowly, the rate of warming could be limited, and termination shock avoided, even where it exerted a very large cooling effect.

3. (standards, manufacturing, testing) Initialism of standard reference material. A standardized material of known composition used as a reference, to calibrate testing equipment, to validate testing equipment, to test materials and equipment
4. Initialism of specified risk material.

• MRS, MSR, Mrs, Mrs., RMS, RMs, RSM, SMR