noun, noun which may take the genitive case particle 'no'
isotonic
Scientific term used in biology, chemistry, and medicine to describe solutions with equal osmotic pressure. Often used in the phrase 等張液 (isotonic solution).
Saline is a type of isotonic solution.
isotonic solution
Compound of 等 (equal) and 張 (tension, stretch), referring to equal osmotic tension. The exact historical derivation is uncertain; the term is a modern scientific coinage.