See Also: tetra-(dictionary)
tetra(encyclopedia)
tetra(dictionary)
tetra-(dictionary)
Tetra Pak(dictionary)
Tetra-(medicine)
Oxy-kesso-tetra(health)
tetra-amelia(medicine)
ethylene diamine tetra acetate(medicine)
4-methylumbelliferyl-tetra-N-acetyl-beta-D-chitotetraoside hydrolase(medicine)

tetra- (iou)



tetra- combining form. [tetra'ethyl adjective (Chemistry) having four ethyl groups in the molecule;
lead tetraethyl,
tetraethyl lead, a colourless oily toxic liquid, Pb(C2H5)4, added to petrol as an antiknock agent: E20.
tetraethyla'mmonium noun (Chemistry) the quaternary ion (C2H5)4N+, whose salts have been used as ganglion-blocking agents to treat hypertension M19.
tetrafluoro'ethylene noun (Chemistry) a dense colourless gas, F2CCF2, which is polymerized to make plastics such as polytetrafluoroethylene M20.
tetragamy noun (a) a fourth marriage; (b) marriage with four women simultaneously: M19.
noun (Prosody) a line or group of four metrical feet M19.
tetrapolis noun a district or State division consisting of four cities or towns M19.
tetra'politan adjective of or pertaining to four cities M19.
te'trapterous adjective (of an insect, a fruit, etc.) having four wings or winglike appendages E19.
tetra'pylon noun a building or structure with four gates E20.
tetra'pyrrole noun (Chemistry) a compound containing four pyrrole nuclei, esp. in the form of a ring (as in porphin) E20.
tetra'quetrous adjective [after TRIQUETROUS] Botany having four sharp angles L19.
tetra'sepalous adjective (Botany) having four sepals E19.
tetra'spermous adjective (Botany) having four seeds M18.
tetraspo'rangium noun, pl. -gia, Botany a sporangium producing or containing tetraspores L19.
tetraspore noun (Botany) any of certain kinds of spore occurring in groups of four; esp. (in a red alga) each of the four spores produced by a tetrasporophyte, two of which produce male plants and two female: M19.
tetra'sporophyte noun (Botany) (in a red alga) the asexual diploid plant, resembling a gametophyte, which develops from a carpospore and gives rise to tetraspores E20.
tetrastoon Architecture a courtyard with open colonnades on all four sides M19.
tetrastyle noun & adjective (Architecture) (a structure) having or consisting of four columns E18.
tetrateuch noun the first four books of the Pentateuch E20.
tetra'thionate noun (Chemistry) a salt of tetrathionic acid M19.
tetrathi'onic adjective:
tetrathionic acid (Chemistry), a colourless strongly acidic oxyacid of sulphur, H2S4O6 M19.
tetra'tomic adjective (Chemistry) (a) = TETRAVALENT; (b) containing four atoms in the molecule: M19.
te,trazoti'zation noun (Chemistry) the process of tetrazotizing a compound E20.
te'trazotize verb trans. (Chemistry) convert (a compound) into a form containing two diazo groups E20.