Isotonic Meaning and Definition in Dictionary
Definitions from Wordnet 2.0
- of or involving muscular contraction in which tension is constant while length changes
- (used of solutions) having the same or equal osmotic pressure
- of two or more muscles; having equal tension
- relating to or characterized by the equal intervals of the well-tempered scale; "isotonic tuning"
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Isotonic Meaning and Definition in Wikipedia
Osmosis is the movement of water through a plasma membrane from a region of low solute concentration to a region of high concentration. Osmosis is passive transport, meaning it does not require energy to be applied. What causes osmotic pressure is different concentrations of solutes on the two sides of the membrane.
When osmosis happens, water moves from the side of the membrane with a lower amount of osmotic pressure to the side of the membrane with the higher amount. An important example of osmosis is the movement of liquid (solvent) molecules across a cell membrane into a cell with a higher solute concentration. Osmosis is a fundamental part of cell biochemistry, but also has mechanical applications and usages.
Hypotonic describes the less concentrated solution. An isotonic solution is when the concentration is equal on both sides of the membrane. Hypertonic describes the more concentrated solution. When there is a hypotonic solution outside the cell, and hypertonic solution inside, the cell gets swollen and distorted.