hard sphere
chiefly Physics
noun
(As a concept in theoretical models) an idealized sphere that is perfectly hard, inelastic, and impenetrable.
Origin
Early 19th century.
- sturdiness
- sturdy
- sturgeon
- Sturgeon's Law
- Sturmabteilung
- Sturmer
- Sturmer pippin
- Sturm und Drang
- Sturt, Charles
- Sturt's desert rose
- stush
- stushie
- stutter
- stutterer
- stutteringly
- stutter tone
- Stuttgart
- stu-vac
- Stuyvesant, Peter
- St Valentine's Day
- St Valentine's Day Massacre
- St Vincent and the Grenadines
- St Vincent, Cape
- St Vitus's dance
- sty