1. Relating to the semen. 2. Original or influential of future developments.
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sem·i·nal 'sem-ən-əl adj of, relating to, or consisting of seed or semen <\seminal discharge>
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sem·i·nal (semґĭ-nəl) [L. seminalis] 1. pertaining to semen; called also spermatic. 2. pertaining to a seed.Medical dictionary. 2011.