Definitions

from The Century Dictionary.

  • In the act or state of grinning; on the grin: as, “his visage all agrin,”

from the GNU version of the Collaborative International Dictionary of English.

  • adverb In the act of grinning.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective grinning; having happiness or satisfaction apparent on one's face
  • noun neuroscience a protein involved in the formation of neuromuscular junctions during embryonic development

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From a- +‎ grin.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the name of the associated gene, AGRN, and -in.

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Examples

  • When axon terminals touch the ephrin-A5-expressing postsynaptic region, EphA4 associated with Meltrin β is localized preferentially at the axon terminal opposite the postsynaptic cluster on the muscle fiber; Meltrin β interferes with the internalization of the ephrin-A5-EphA4 complexes so that the axon terminal and muscle could avoid receiving a repulsive signal at the NMJ, and many molecules, such as agrin, MuSK and adhesion proteins, cooperate in stabilization of the NMJ.

    PLoS ONE Alerts: New Articles 2008

  • Well, we are here at the C.agrin Valley J.C. Blossom Time Festival.

    CNN Transcript May 26, 2007 2007

  • Well, we are here at the C.agrin Valley J.C. Blossom Time Festival.

    CNN Transcript May 26, 2007 2007

  • When a ray from a lantern (the three pedestrians of the party carried each one) fell on Mr. Moore's face, you could see an unusual, because a lively, spark dancing in his eyes, and a new-found vivacity mantling on his dark physiognomy; and when the rector's visage was illuminated, his hard features were revealed all agrin and ashine with glee.

    Shirley, by Charlotte Bronte 2004

  • At the Royal Canal bridge, from his hoarding, Mr Eugene Stratton, his blub lips agrin, bade all comers welcome to Pembroke township.

    Ulysses 2003

  • The way the wire stretched back the corners of his mouth made him look all agrin, and the expression ill-consisted with Inman's mood.

    Cold Mountain Frazier, Charles, 1950- Cold Mountain 2003

  • The way the wire stretched back the corners of his mouth made him look all agrin, and the expression ill-consisted with Inman's mood.

    Cold Mountain Frazier, Charles, 1950- Cold Mountain 1997

  • Doc was all agrin, and regarded the early trip ashore in the nature of a lark, and cast aside his white coat, to help row in his resplendent sweater, while the cook went about laying the table for breakfast, his round yellow face devoid of any interest in what was going on.

    Isle o' Dreams Frederick Ferdinand Moore 1930

  • Sots vieux, nouveaux, et sots de tous ages, _ "thus he scornfully declaimed," and as yokefellow with Dan Merlin in his thorn-bush, and with wise Salomon when he capered upon the high places of Chemosh, and with Duke Ares sheepishly agrin within the net of

    Chivalry James Branch Cabell 1918

  • Chemosh, and with Duke Ares sheepishly agrin in the net of Mulciber.

    Chivalry James Branch Cabell 1918

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