While most of us are limited to the visible spectrum, people with a condition called aphakia possess ultraviolet vision. Aphakia is the lack of a lens, due to surgical removal for cataracts or congenital defects.
A railroad lantern and a railroad lamp are two different things. Lanterns were designed to be portable (i.e. carried) and were basically globes surrounded by a metal frame with a fuel source. When you think of a railroad worker swinging a signal, think lantern.
âº An engine (also also locomotive) is a separate part of a train that pulls the other parts of the train. (Definition of âengineâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press) âengineâ in Business English See all translations