Freebase(0.00 / 0 votes)Rate this definition: Diltiazem. Diltiazem is a nondihydropyridine member of the class of drugs known as calcium channel blockers, used in the treatment of hypertension, angina pectoris, and some types of arrhythmia. It is also an effective preventive medication for migraine. It is a class 3 antianginal drug, and a class IV antiarrhythmic.
Rigid definition, stiff or unyielding; not pliant or flexible; hard: a rigid strip of metal. See more.
Wiktionary(0.00 / 0 votes)Rate this definition: continuum(Noun) A continuous series or whole, no part of which is noticeably different from its adjacent parts, although the ends or extremes of it are very different from each other. continuum(Noun) The set of all real numbers and, more generally, a compact connected metric space.