semipermeable (redirected from semipermeability)

semipermeable /semi·per·me·a·ble/ (sem″e-per´me-ah-b'l) permitting passage only of certain molecules.

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sem·i·per·me·a·ble (sm-pûrm--bl, sm-)

adj.

1. Partially permeable.

2. Allowing passage of certain, especially small, molecules or ions but acting as a barrier to others. Used of biological and synthetic membranes.

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semipermeable

[-pur′mē·əbəl]

Etymology: L, semi, half, permeare, to pass through

pertaining to a membrane that allows the passage of some molecules but prevents the passage of others. Also selectively permeable.

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semipermeable (sem´ēpur´mēbl),

adj permitting the passage of certain molecules and hindering that of others.

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semipermeable

permitting passage only of certain molecules; said of a membrane.