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1. A, n. View full entry 1953
...Biochem. Denoting a form of double stranded nucleic acid comprising a right-handed double helix in which the base pairs form an angle of approximately seventy degrees with the helix axis; (also)...
2. A chromosome in A, n. View full entry 1909
...a chromosome reckoned as the first in a classification varying from author to author (now disused);a chromosome of the set which normally occurs in all the members of a species....
3. ADH in A, n. View full entry 1945
...antidiuretic hormone....
4. ARV in A, n. View full entry 1994
... antiretroviral; an antiretroviral drug; antiretroviral therapy....
5. aandblom, n. View full entry 1793
...Any of several evening-scented wild flowers of the family Iridaceae; esp. Hesperantha falcata, which has fragrant white flowers that open in the late afternoon....
6. aardvark, n. View full entry 1785
...A medium-sized, nocturnal African mammal, Orycteropus afer, which has sparse hair, long ears, an elongated snout, strong burrowing limbs, and a thick tail, feeding solely on ants and termites. Also...
7. aardwolf, n. View full entry 1833
...A small, nocturnal African hyena, Proteles cristata, which has a mane along the back and black vertical stripes, feeding chiefly on termites. Also called earth wolf, maanhaar...
8. aaron, n.1 View full entry ?c1425
...The wild arum or cuckoo pint, Arum maculatum. Cf. arum...
9. Aaron's beard, n. View full entry 1820
...Any of several plants which are thought to resemble a beard in growth, habit, or appearance; esp.the rose of Sharon, Hypericum calcinum, which has prominent tufts of hair-likeeither...
10. aasvoel, n. View full entry 1821
...A vulture; esp. the Cape vulture, Gyps coprotheres....
11. abaca, n. View full entry 1751
...A kind of banana plant, Musa textilis, native to the Philippines, the petioles of which yield a strong fibre. Also: the fibre itself, used for making paper, ropes, matting, etc.;...
12. abactinal, adj. View full entry 1857
...Designating the part or surface of an echinoderm or other radiate animal that is furthest from the mouth (as the upper side of a starfish); relating to this part; = aboral...
13. abactinally in abactinal, adj. View full entry 1883
...on or towards the abactinal surface; = aborally; cf. actinallyactinal....
14. abalone, n. View full entry 1850
...An edible gastropod mollusc of the genus Haliotis, typically found in warm seas, having a shallow ear-shaped shell lined with mother-of-pearl and pierced with a line of respiratory holes; an...
15. abapical, adj. View full entry 1866
...Designating a side or part that is furthest from or opposite to an apex....
16. abapically in abapical, adj. View full entry 1934
...at an abapical side or part; away from an apex....
17. 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....
18. † abate, v.3 View full entry a1475
...intr. Of a falcon, hawk, etc.: to beat or flap the wings, to flutter. Cf. bate...
19. abaxial, adj. View full entry 1835
...Designating the surface of an organ, esp. a leaf, which during development initially faces away from the main axis or stem (usually the underside or outer surface); of or relating to such...
20. abaxial, adj. View full entry 1847
...Esp. of a plant embryo: positioned off the main axis or central line; = abaxile1 Freq. opposed to axial. Obs....
