HC

Medicine • Health Canada • Hemicrania continua • Hyperelastosis cutis or hereditary equine regional dermal asthenia Chemistry • Hemocyanin, a metalloprotein abbreviated Hc • HC smoke, a US military designation for Hexachloroethane • Homocapsaicin, a capsaicinoid • Hydrocarbon, a category of substances consisting only of hydrogen and carbon Other uses in science, technology, and mathematics • 74HC-series integrated circuits, a logic family of integrated circuits • Felix HC, a series of Romanian personal microcomputers produced by ICE Felix Bucharest and which were ZX Spectrum clones • Hemianthus callitrichoides, a freshwater aquatic plant native to Cuba • + h.c., a notation used in mathematics and quantum physics == Sports ==

• Head Coach • Hors catégorie (French), used in cycle races to designate a climb that is "beyond categorization" • UCI .HC road cycling races (1.HC and 2.HC), the second tier of events in the sport, after the UCI World Tour == Other uses ==

• Heritage Corridor, a Metra commuter rail line running from Chicago to Joliet, Illinois • Highway contract route, an outsourced United States Postal Service delivery method, formerly known as Star routes • Honorary degree, or honoris causa • Hors de commerce, prints similar to Artist Proofs except they are only available through the artist directly • Hospitality Club, an internet-based hospitality service • Houston Chronicle, newspaper of record of Houston, Texas • Aero-Tropics Air Services (IATA airline designator HC) • Disability, acronym for Handicap/Handicapped • High-cube container, a type of intermodal shipping container