forward voltage (1) (across a p‑n junction)

The voltage between the p‑type region and the n‑type region when the p‑type region is at a positive voltage relative to the n‑type region.

(2) (across a semiconductor diode): A positive anode-cathode voltage.

References: 

JESD77-B, 2/00

JESD77-B, 2/00
JESD282-B, 4/00