<p><strong>Noun</strong></p><ul><li>any of the faculties, such as sight, hearing, smell, taste, or touch, by which humans and animals perceive stimuli originating from outside or inside the body.</li><li>the faculties by which humans and animals perceive stimuli originating from outside or inside the body collectively.</li><li>the operation or function of the organs of touch, taste, etc.; sensation.</li><li>a feeling or perception produced through the organs of touch, taste, etc., or resulting from a particular condition of some part of the body.</li><li>a faculty or function of the mind analogous to sensation.</li><li>any special capacity for perception, estimation, appreciation, etc.</li><li>clear and sound mental faculties; sanity.</li><li>a more or less vague perception or impression.</li><li>a mental discernment, realization, or recognition.</li><li>the recognition of something as incumbent or fitting.</li><li>sound practical intelligence.</li><li>something that is sensible or reasonable.</li><li>the meaning or gist of something.</li><li>the value or worth of something; merit.</li><li>the meaning of a word or phrase in a specific context, especially as isolated in a dictionary or glossary; the semantic element in a word or group of words.</li><li>an opinion or judgment formed or held, especially by an assemblage or body of persons.</li><li>a DNA sequence that is capable of coding for an amino acid.</li><li>one of two opposite directions in which a vector may point.</li></ul><p><strong>Verb</strong></p><ul><li>to perceive (something) by the senses; become aware of.</li><li>to grasp the meaning of; understand.</li><li>(of certain mechanical devices) to detect physical phenomena, as light, temperature, radioactivity, etc., mechanically, electrically, or photoelectrically.</li><li>to receive or capture (encoded data) electrically, photoelectrically, etc., through an input device.</li></ul>