kʌmˈpoʊnənt kənˈstɪtjuənt ˈɛlɪmənt ˈfæktə ˈfæktɚ ɪnˈɡɹiːdi.ənt an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system spare components for cars a component or constituent element of a system an abstract part of something jealousy was a component of his character two constituents of a musical composition are melody and harmony the grammatical elements of a sentence a key factor in her success humor: an effective ingredient of a speech the most favorable environment for a plant or animal water is the element of fishes a straight line that generates a cylinder or cone the situation in which you are happiest and most effective in your element any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter one of four substances thought in ancient and medieval cosmology to constitute the physical universe the alchemists believed that there were four elements