a.d. c430–518, emperor of the Eastern Roman Empire 491–518.
a compound lens corrected for the aberrations of astigmatism and curvature of field. Historical Examples This makes a most desirable outfit at a surprisingly low price for an anastigmat equipment. Kodaks and Kodak Supplies, 1914 Canadian Kodak Company For those, however, who wish even greater efficiency and capabilities, we supply the anastigmat lens equipments. Kodaks […]
(of a lens) not having astigmatism; forming point images of a point object located off the axis of the lens; stigmatic. adjective (of a lens or optical device) not astigmatic Also stigˈmatic
to communicate or connect by . Historical Examples Near the ciliary end of the vitreous humour they anastomose with the vessels of the membrana capsulo-pupillaris. The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour These ribs are very irregular, and anastomose with each other throughout; the pileus hollow, opening into the […]
to communicate or connect by . Anatomy. communication between blood vessels by means of collateral channels, especially when usual routes are obstructed. Biology, Geology. connection between parts of any branching system, as veinlets in a leaf or branches of a stream. Surgery, Pathology. a joining of or opening between two organs or spaces that normally […]