|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|1.||any substance used in or resulting from a reaction involving changes to atoms or molecules, especially one derived artificially for practical use|
|2.||of or used in chemistry: chemical balance|
|3.||of, made from, or using chemicals: chemical fertilizer|
chemical chem·i·cal (kěm'ĭ-kəl)
Of or relating to chemistry.
Of or relating to the properties or actions of chemicals.
A substance with a distinct molecular composition that is produced by or used in a chemical process.
A drug, especially an illicit or addictive one.
|chemical (kěm'ĭ-kəl) Pronunciation Key
Adjective Relating to or produced by means of chemistry.
Noun A substance having a specific molecular composition, obtained by or used in a chemical process.