<p><strong>Noun</strong></p><ul><li>the act or power of penetrating.</li><li>penetrating.</li><li>mental acuteness, discernment, or insight: a scholar of rare penetration.</li><li>Synonyms: profundity, depth, discrimination, perception, understanding.</li><li>the obtaining of a share of a market for some commodity or service.</li><li>the extension, usually peaceful, of the influence of one nation or culture into the affairs of another.</li><li>a military attack that penetrates into enemy territory.</li><li>Gunnery: the depth to which a projectile goes into the target.</li><li>the measure of relative depth of field of a telescope or microscope, especially a binocular microscope.</li></ul>