<p><strong>Noun</strong></p><ul><li>plural: etymons, etyma</li><li>the linguistic form from which another form is historically derived, as the Latin <em>cor</em> “heart,” which is the etymon of English <em>cordial</em>, or the Indo-European <em>ḱ(e)rd-</em>, which is the etymon of Latin <em>cor</em>, Greek <em>kardía</em>, Russian <em>serdtse</em>, and English <em>heart</em>.</li></ul>