from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy A seamlike line or ridge between two similar parts of a body organ, as in the scrotum.
- n. Botany The portion of the funiculus that is united to the ovule wall, commonly visible as a line or ridge on the seed coat.
- n. The median groove of a diatom valve.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A ridge or seam on an organ, bodily tissue, or other structure, especially at the join between two halves or sections.
from the GNU version of the Collaborative International Dictionary of English
- n. A line, ridge, furrow, or band of fibers, especially in the median line.
- n. Same as Rhaphe.
from The Century Dictionary and Cyclopedia
- n. In botany: In an anatropous or amphitropous (hemitropous) ovule or seed, the adnate cord which connects the hilum with the chalaza, commonly appearing as a more or less salient ridge, sometimes completely embedded in a fleshy testa of the seed. See cuts under anatropous and hemitropous.
- n. A longitudinal line or rib on the valves of many diatoms, connecting the three nodules when present. (See nodule.) The usual primary classification of genera depends upon its presence or absence.
- n. In anatomy, a seam-like union of two lateral halves, usually in the mesial plane, and constituting either a median septum of connective tissue or a longitudinal ridge or furrow; specifically, in the brain, the median lamina of decussating fibers which extends in the tegmental region from the oblongata up to the third ventricle.
- n. In ornithology, the groove along the under side of the rachis of a feather.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a ridge that forms a seam between two parts
New Latin, from Greek rhaphē, seam, suture, from rhaptein, to sew; see wer-2 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Modern Latin, from Ancient Greek ῥαφή ("seam"). (Wiktionary)