septo- or sept-
septomarginal sep·to·mar·gi·nal (sěp’tō-mär’jə-nəl) adj. Of or relating to the margin of a septum. Of or relating to a margin and a septum.
- Separate wheat from chaff
Sort the valuable from the worthless, as in I hope we’ll get a preview of the auction so we can separate the wheat from the chaff. This idiom alludes to the ancient practice of winnowing grain.
- Separate the men from the boys
separate the men from the boys separate the men from the boys Distinguish between mature, experienced individuals and novices, as in The picket line will separate the men from the boys in the union. The idiom is used without respect to gender. [ c. 1930 ]
- Septo-optic dysplasia
septo-optic dysplasia sep·to-op·tic dysplasia (sěp’tō-ŏp’tĭk) n. A congenital hypoplasia of the optic nerve resulting from the defective development of the retinal ganglia cells and their axons.