Browse dictionary
Showing 1-20 of 23059 results in 23059 entries
1. A, n. View full entry OE
...The letter, and the sound it represents....
2. aa, n.2 View full entry 1859
...A kind of volcanic lava with a rough, jagged surface covered with loose clinkers. Freq. attrib., esp. in aa lava. Contrasted with pahoehoe....
3. Aalenian, n. and adj. View full entry 1882
...A stage at the lowest level of the Middle Jurassic, lying next below the Bajocian; the geological age corresponding to this stage....
4. Aanderaa, n. View full entry 1969
...attrib. Designating an instrument for measuring, recording, and transmitting oceanographic data, typically the direction and speed of currents and the water temperature; esp. in Aanderaa current meter....
5. abaction, n. View full entry 1623
...The action of driving something away; spec. the action of stealing livestock, esp. cattle, by driving them away....
6. abasic, adj.2 View full entry 1982
...Of a nucleotide: lacking a purine or pyrimidine base. Of DNA, or a specific site in a sequence of nucleotides: containing a nucleotide or nucleotides of this type....
7. Abbe, n.2 View full entry 1876
...Used attrib., in the genitive, and with of, to designate optical instruments and concepts invented by or associated with Abbe....
8. Abell, n. View full entry 1959
...With following numeral: any of certain galaxy clusters distinguished by their richness (i.e. the number and density of galaxies in their central regions) and listed by Abell in his catalogue....
9. aberrate, v. View full entry 1749
...intr. To go astray; to deviate from a usual course or mode of behaviour. Also: to produce aberration....
10. aberration, n. View full entry 1588
...A deviation or departure from what is normal, usual, or expected, typically an unwelcome one. Also as a mass noun: deviation, abnormality, departure from the norm....
11. aberrational, adj. View full entry 1831
...Of, relating to, or characterized by aberration; eccentric, irrational, unsound. Also: aberrant, abnormal, diverging from the norm....
12. abichite, n. View full entry 1850
...= clinoclaseclino-1....
13. abietate, n. View full entry 1853
...A salt or ester of abietic acid....
14. abietene, n. View full entry 1872
...A volatile, odoriferous liquid hydrocarbon mixture obtained by distillation of the resin of the digger pine of California, Pinus sabiniana, and formerly used as a solvent and in patent medicines;...
15. abietic, adj. View full entry 1826
...a terpenoid acid which is the main constituent of rosin; (also) any of a group of resin acids having structures closely related to this....
16. abietine, n. View full entry 1834
...A neutral resinous substance obtained by the distillation of Strasbourg turpentine or other pine resins. Obs....
17. abietinic, adj. View full entry 1863
...a dibasic acid obtained from resin, said to have the formula C44H64O5;(in later use) = abietic acidabietic...
18. † abietite, n. View full entry 1869
...A sugar extracted from the needles of the European silver fir, Abies alba....
19. abiogenesis, n. View full entry 1870
...The supposed production of certain living organisms directly from inanimate matter, rather than by the reproduction of existing organisms; spontaneous generation. Opposed to biogenesis1a. Now chiefly hist....
20. abiogenesist, n. View full entry 1889
...= abiogenist...
