ETYM Latin diaphragma, Greek, to fence by a partition wall; dia through + diaphrassein to fence, inclose; prob. akin to Latin fareire to stuff: cf. French diaphragme. Related to Farce.
The sensing membrane which is deformed when pressure is applied.
Vibrates to receive or produce sound waves.
ETYM AS. film skin, from fell skin; akin to fylmen membrane, OFries. filmene skin. Related to Fell skin.
1. A base of celluloid covered with a photographic emulsion; used to make negatives or transparencies; SYN. photographic film.
2. A medium (art or business) that disseminates moving pictures; SYN. cinema, celluloid.
3. A thin coating or layer.
4. A thin sheet of (usually plastic and usually transparent) material used to wrap or cover things; SYN. plastic film.
Thin plate or layer; flake.
In flowering plants (angiosperms), the blade of the leaf on either side of the midrib. The lamina is generally thin and flattened, and is usually the primary organ of photosynthesis. It has a network of veins through which water and nutrients are conducted. More generally, a lamina is any thin, flat plant structure, such as the thallus of many seaweeds.
Sinonimi: tissue layer
ETYM French, from Latin membrana the skin that covers the separate members of the body, from Latin membrum. Related to Member.
1. A pliable sheet of tissue that covers or lines or connects organs or cells of animals or plants; SYN. tissue layer.
2. A thin pliable sheet of material.
The pH-sensitive glass bulb is the membrane across which the potential difference due to the formation of double layers with ion-exchange properties on the two swollen glass surfaces is developed. The membrane makes contact with and separates the internal element and filling solution from the sample solution.
In living things, a continuous layer, made up principally of fat molecules, that encloses a cell or organelles within a cell. Small molecules, such as water and sugars, can pass through the cell membrane by diffusion.Large molecules, such as proteins, are transported across the membrane via special channels, a process often involving energy input. The Golgi apparatus within the cell is thought to produce certain membranes.
In cell organelles, enzymes may be attached to the membrane at specific positions, often alongside other enzymes involved in the same process, like workers at a conveyor belt. Thus membranes help to make cellular processes more efficient.
ETYM Latin pellicula, dim. of pellis skin: cf. French pellicule.
Thin skin or film; membrane.
Thin protective membrane in some protozoa.
ETYM Icel. skinn; akin to Swed. skinn, Dan. skind, as. scinn, German schined to skin.
1. An outer surface (usually thin).
2. The tissue forming the hard outer layer of e.g. a fruit; SYN. rind.
3. A person's skin regarded as their life.
4. A container for liquids that is made from the skin of an animal.
1. A network of sticky strands, such as those woven by spiders.
2. An intricate network suggesting something that was formed by weaving or interweaving.
3. An intricate trap that entangles or ensnares its victim; SYN. entanglement.
4. Membrane connecting the toes of some aquatic birds and mammals.