1. (adj)hypodermic syringe, hypodermic, hypo a piston syringe that is fitted with a hypodermic needle for giving injections Synonyms: sodium thiosulphate, hypodermic syringe, hypo, sodium thiosulfate, hypodermic
2. (adj)hypodermic, subcutaneous relating to or located below the epidermis Synonyms: subcutaneous, hypodermic