Main entry: isotonic
Definition: of or involving muscular contraction in which tension is constant while length changes
Antonyms: isometric
Definition: of or involving muscular contraction in which tension increases while length remains constant
Main entry: isosmotic, isotonic
Definition: (used of solutions) having the same or equal osmotic pressure
Antonyms: hypertonic
Definition: (of a solution) having a higher osmotic pressure than a comparison solution
Antonyms: hypotonic
Definition: (of a solution) having a lower osmotic pressure than a comparison solution
Main entry: isotonic
Definition: of two or more muscles; having equal tension
Antonyms: unlax, relax, unstrain, unwind, loosen up, make relaxed
Definition: cause to feel relaxed
Antonyms: unbend, loosen up, decompress, unwind, relax, slow down
Definition: become less tense, rest, or take one's ease
Antonyms: lax
Definition: lacking in strength or firmness or resilience
Antonyms: lax
Definition: pronounced with muscles of the tongue and jaw relatively relaxed (e.g., the vowel sound in `bet')
Antonyms: relaxed
Definition: without strain or anxiety