See Also: microglial cell(medicine)
Erythrocyte (red blood cell, red cell, red corpuscle)(health)
Red blood Cell (erythrocyte, red cell, red corpuscle)(health)
T-cell-rich, B-cell lymphoma(medicine)
T cell(dictionary)
P cell(medicine)
B cell(encyclopedia)
NIH 3T3 cell(medicine)
Cell, fat(health)
T cell(encyclopedia)

tap(1) (iou) and microglial cell (medicine)


tap(1) (iou)



tap noun1. [tap]

Orig., a peg or stopper for closing and opening the vent-hole in a cask, barrel, etc. Now also, a hollow or tubular structure through which liquid or gas from a pipe or vessel may be drawn, having a peg, valve, or Other device for shutting off or regulating the flow; spec. one providing access to a supply of piped water for household etc. use. OE.
cold tap, hot tap, mixed tap, etc.
P. Fitzgerald Frank fetched him a glass of water from the tap at the sink. Conan Doyle By turning the outside tap the room could be flooded with gas.
b. Electrical Engineering. = TAPPING noun1 2. E20.
c. Stock Exchange. A government stock issued in large quantities over a period of time. Also tap stock. M20.
The liquid drawn from a particular tap; spec. a particular kind or quality of drink etc. colloq. E17.
An object shaped like a slender tapering cylinder; esp. a tap root. M17.
C. Marshall The tap of the oak will make its way downward, in a direct line.
Mechanics. A tool used for cutting the thread of an internal screw, consisting of a male screw of hardened steel, grooved lengthways to form cutting edges. L17.
A taproom, a tap-house. colloq. E18.
a. A device for listening secretly to or monitoring a telephone conversation. Cf. TAP verb1 6. E20.
b. An act or instance of using such a device; a recording made in this way. M20.
W. Garner He'd made a phone tap, and overheard a Reference to an agent.
Phrases: on tap (a) ready to be drawn off by tap; (b) ready for immediate consumption or use (lit. & fig.); (c) spec. (Stock Exchange) (of a Security) made readily available in large quantities. on the tap slang begging, asking for a loan.
Comb.: tap-bolt a threaded bolt for screwing into a part (as opp. to one that penetrates a part and receives a nut); tap-borer a tapering instrument for boring bung-holes or tap-holes; tap-changer Electrical Engineering an apparatus for accomplishing tap-changing; tap-changing Electrical Engineering the process of changing the connection to a transformer from one tap to another so as to vary the turns ratio and hence control the output voltage under a varying load; tap-cinder refuse produced in a puddling furnace; tap-hole (a) the hole in a cask, tub, etc., in which the tap is inserted; (b) a small opening in a furnace for molten metal etc. to run out; tap-hose (obsolete exc. dial.) a strainer placed over the tap-hole in a mash-tub, cask, etc., to prevent solid matter from passing into or through the tap; tap-house a place where beer drawn from the tap is sold in small quantities, esp. an alehouse; tap-lash (obsolete exc. dial.) (a) very weak or stale beer, dregs; (b) derog. a publican; tap-rivet noun & verb (a) noun = tap-bolt above; (b) verb trans. secure by tap-bolts; taproom a room in which alcoholic Drinks are available on tap; tap stock: see sense 1c above; tap-tool = sense 4 above; tap water: drawn through a tap, esp. from a piped supply for household use; tap wrench: for turning a tap-tool.
taplet noun (Stock Exchange) a limited issue of tap stock; an issue of stock rather smaller than a tap; cf. TRANCHETTE: L20.

microglial cell (medicine)


microglial cell
<pathology> Small glial cells of mesodermal origin, with scanty cytoplasm and small spiny processes. Distributed throughout grey and white matter. Derive from monocytes and invade neural tissue just before birth, capable of enlarging to become macrophages.