(n.) An atom whose valence is six, and which can be theoretically combined with, substituted for, or replaced by, six monad atoms or radicals; as, sulphur is a hexad in sulphuric acid. Also used as an adjective.
Example Sentences:
(1) The results of this investigation indicated that the growth cycle of some Mycoplasma species includes a stage of hexadic fission with the cleavage of minimal reproductive units (less than 100 mmu) containing a limited deoxyribonucleic acid genetic coding molecule (approximately 4 x 10(6)).
(2) The main molecular species in the adductor muscle was hexadecanoyl-hexadeca-4-sphingenyl 2-aminoethylphosphonate, while in the viscera hexade-canoyl-octadeca-4,8-sphingenyl 2-aminoethylphosphonate predominated.
(3) With all the tested additions of stable hexad chromium in water Cr51 is prevalently retained in the stomach and intestines.
Polyad
Definition:
Example Sentences:
(1) Implications are indicated in polyadic systems, and a new aspect of transference is noted.
(2) Pollen of acacias is transported by insects as polyads, composite pollen grains.
(3) This defect correlates with several abnormalities in subsequent developmental events including the formation of multinucleate daughter cells, multiple microspindles during meiosis II, multiple phragmoplasts, polyads of microspores, and cytoplasmic microtubule foci.
(4) The polyad has enough pollen grains to fertilize all ovules within a flower and hence all seed within a pod may be full sibs.
(5) A series of experiments has been carried out with single doses of simple analgesics in patients with rheumatoid arthritis using a consistent polyad design.
(6) The following main anomalies of meiosis were revealed: the univalent state of chromosomes; an irregular movement of 8 to 33 chromosomes to the poles; the lag of 6 to 25 chromosomes and their premature splitting into chromatids; formation of micronuclei in diads and tetrads, formation of polyads.