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Definition of raphe
1 : the seamlike union of the two lateral halves of a part or organ (such as the tongue) having externally a ridge or furrow
2a : the part of the stalk of an anatropous ovary that is united in growth to the outside covering and forms a ridge along the body of the ovuleb : the median line or slit of the valve of certain diatoms
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Recent Examples of raphe from the Web
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The region, known as the dorsal raphe nucleus, or D.R.N., is best known for its link to depression.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'raphe'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of raphe
New Latin, from Greek rhaphē seam, from rhaptein to sew
Medical Dictionary
raphe
Medical Definition of raphe
: the seamlike union of the two lateral halves of a part or organ (as of the tongue, perineum, or scrotum) having externally a ridge or furrow and internally usually a fibrous connective tissue septum
Learn More about raphe
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Britannica.com: Encyclopedia article about raphe
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