Isotonic
Part of speech: adjective
Definition: having the same osmotic pressure Having the same concentration of solutes as human blood. having equal tension
Interval
Part of speech: noun
Definition: A distance in space.A period of time.The difference (a ratio or logarithmic measure) in pitch between two notes, often referring to those two pitches themselves (otherwise known as a dyad).A connected section of the real line which may be empty or have a length of zero.An intermission.Either of the two breaks, at lunch and tea, between the three sessions of a day's play
Example sentence: I remember, when I was doing 'Nicholas Nickleby', James Archer came to see me at the interval and said, 'My father would like to see you after the show.' It felt rather as if I had been summoned by the Queen, and I was cocky enough to think, 'Who the hell is he to summon me?'