Hepatitis C. Prothrombin is a protein made by the liver. Prothrombin helps blood to make normal clots. The prothrombin time (PT) is one way of measuring how long it takes blood to form a clot, and it is measured in seconds (such as 13.2 seconds). A normal PT indicates that a normal amount of blood-clotting protein is available.
KSEIBI 500-Amp Electrode Holder is used for manual electrode welding to avoid any kind of shock or accident. The large 500-Amp is rated for durability. The electrode holder connects to the welding cable and con- ducts the welding current to the electrode.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  holder(noun) a holding device. 2  holder(noun) a person who holds something. 3  holder, bearer(noun) the person who is in possession of a check or note or bond or document of title that is endorsed to him or to whoever holds it.