hypotonic

From hypo- +‎ tonic.

• (UK) IPA^(key): /hʌɪpə(ʊ)ˈtɒnɪk/
• (US) IPA^(key): /haɪpəˈtɑnɪk/, /haɪpoʊˈtɑnɪk/

hypotonic (comparative more hypotonic, superlative most hypotonic)

1. (of a solution) Having a lower osmotic pressure than another.
2. (medicine) Showing less than normal tension in the muscles or muscle tissue.
   • 1983, Lawrence Durrell, Sebastian (Avignon Quintet), Faber & Faber, published 2004, page 1053:

     But always he went the full length, crying until he was completely exhausted, worn out, hypotonic.

• hypertonic

• isotonic

• typhoonic