isotonic (redirected from isotonicity)

isotonic /iso·ton·ic/ (-ton´ik)

1. denoting a solution in which body cells can be bathed without net flow of water across the semipermeable cell membrane.

2. denoting a solution having the same tonicity as another solution with which it is compared.

3. maintaining uniform tonus.

---

i·so·ton·ic (s-tnk)

adj.

1. Of equal tension.

2. Isosmotic.

3. Having the same concentration of solutes as the blood.

4. Of or involving muscular contraction in which the muscle remains under relatively constant tension while its length changes.

---

iso·to·nici·ty (-t-ns-t) n.

---

isotonic

[ī′səton′ik]

Etymology: Gk, isos + tonikos, stretching

pertaining to a solution that causes no change in cell volume.

---

isotonic (īˈ·sō·tˑ·nik),

n muscle contraction that involves change in the muscle length.

---

isotonic (ī´sōton´ik),

adj equivalence in osmotic pressure. Specifically used in reference to a solution whose osmotic pressure is equal to that of a body fluid, such as blood plasma or tears, to which the solution is compared.

isotonic muscle contraction,

n See contraction, muscle, isotonic.

---

isotonic

1. of equal tension.

2. denoting a solution in which body cells can be bathed without net flow of water across the semipermeable cell membrane; also, denoting a solution having the same tonicity as another solution with which it is compared.

---

isotonic contraction

muscle contraction without appreciable change in the force of contraction; the distance between the muscle's origin and insertion becomes lessened.

isotonic dehydration

occurs when the fluid lost is isotonic with serum, as in sweating, simple enteritis, nephrosis. There are therefore no errors of electrolyte balance likely to result.

isotonic saline

see normal saline.

---

isotonic

adjective 1 Referring to a uniform muscle tone 2 Referring to uniformity of osmotic pressure noun Isotonic drink, see there