Initialism of high school. / Initialism of health system. / (ski jumping) Initialism of hill size.

(medicine, pharmacology) Initialism of half strength. / (medicine, pharmacology) Initialism of hora somni (“literally, hour of sleep; at bedtime”).. From Latin hora somni

Abbreviation of high speed.

plural of H

plural of h

(medicine, of a biochemical assay) Abbreviation of high-sensitivity.

(communication, electronics) High Speed Downlink Shared Channel (in UMTS).

(communication, electronics) Initialism of High Speed Physical Downlink Shared Channel (in UMTS).

(communication, electronics) Initialism of High Speed Shared Control Channel (in UMTS).

plural of 1-H