Thymol is a phenol derivative of cymene, C₁₀H₁₃OH, isomeric with carvacrol, found in oil of thyme, and extracted as a white crystalline substance of a pleasant aromatic odor and strong antiseptic properties. It is also called hydroxy cymene. (from Webster's 1913 dictionary) Phenol, also known under the old name carbolic acid, is a colorless crystalline solid with a typical sweet tarry odor. ... In chemistry, isomers are molecules with the same chemical formula and often with the same kinds of bonds between atoms, but in which the atoms are arranged differently. ... Carvacrol, or cymophenol, C6H3CH3(OH)(C3H7), is a constituent of the ethereal oil of Origanum hirtum, oil of thyme, oil obtained from pepperwort, and wild bergamot. ... Species About 350 species, including: Thymus adamovicii Thymus bracteosus Thymus broussonetii Thymus caespititius Thymus camphoratus Thymus capitatus Thymus capitellatus Thymus carnosus Thymus cephalotus Thymus cherlerioides Thymus ciliatus Thymus cilicicus Thymus cimicinus Thymus comosus Thymus comptus Thymus doerfleri Thymus glabrescens Thymus herba-barona Thymus hirsutus Thymus hyemalis Thymus integer Thymus lanuginosus... Crystal (disambiguation) Insulin crystals A crystal is a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered, repeating pattern extending in all three spatial dimensions. ... In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ... Odor receptors on the antennae of a Luna moth An odor (American English) or odour (Commonwealth English) is the object of perception of the sense of olfaction. ... An antiseptic (Greek αντι, against, and σηπτικος, putrefactive) is a substance that prevents the growth and reproduction of various microorganisms (such as bacteria, fungi, protozoa, and viruses) on the external surfaces of the body. ... A property is an intrinsic or extrinsic quality of an object—where an object may be of any differing nature, depending on the context and field — be it computing, philosophy, etc. ... 1888 advertisement for Websters Dictionary Websters Dictionary is a common title given to English language dictionaries in the United States, deriving its name from American lexicographer Noah Webster. ... 1913 is a common year starting on Wednesday. ... ...