A substance, natural or man-made, which is intrinsically dangerous or otherwise poses a safety hazard. Examples are materials which are explosive, poisonous, chemically active (including acids and ...

(historical) Alternative form of linstock

(cardiology) Synonym of ECG (“electrocardiogram”)

(cytology) A reproductive cell or gamete of a male, carried in semen, that fertilizes an ovum to produce a zygote.