Abbreviation of 1 John.

Initialism of single conductor wire or cable.

Alternative form of 1 Kgs, 1 Kings.

A selective service class denoting that the registrant is already a member of the armed forces or also the NOAA or the Public Health Service.

A selective service class denoting that the registrant is not currently subject to induction processing.

plural of 1-H

(politics) A group of six world powers (China, France, Russia, the United Kingdom, and the United States, plus Germany) which joined the diplomatic efforts with Iran with regard to its nuclear program.

Abbreviation of New Delhi metallo-beta-lactamase-1 (“an enzyme conferring resistance to beta-lactam antibiotics”). / A bacterial gene that produces the enzyme.

One of the two isometric forms of propanol; a primary alcohol with the formula CH₃CH₂CH₂OH, formed naturally in small amounts during many fermentation processes and used as a solvent in the pharmaceutical industry mainly for resins and cellulose esters.

(aviation) Initialism of jet propellant 1. (a highly refined kerosene; a type of jet fuel)