shutter
UK[ˈʃʌtə]US[ˈʃʌtər]
n
A device that opens and closes to cover a window or opening.
n
The part of a camera that opens for a precise time to let light in and expose the film or sensor.
v
To close something with shutters.
Morpheme Breakdown
shut
er
shut
to put a bolt in place, to close
er
a thing that shuts
Etymology
The word "shutter" is a transparent English compound built from the native verb "shut" and the agentive suffix "-er". The verb "shut" itself has Germanic origins, tracing back to the Old English scyttan, meaning to close with a bolt or bar, which is related to the act of securing a door. The suffix "-er" is a highly productive agent-noun formative in English, turning the action into the object that performs it. Thus, the literal logic of "shutter" is "a thing that shuts," a meaning perfectly preserved in its modern applications for both windows and camera mechanisms, where the device's primary function is to open and close an aperture.
Analysis
Structure: shut + er
- shut: From Old English scyttan, meaning "to put a bolt in place, to close". It functions as the core verb root.
- er: An agentive suffix from Old English -ere, used to form nouns denoting a person or thing that performs an action. Here, it forms a noun meaning "a thing that shuts".
Examples
He closed the wooden shutters to block out the afternoon sun.
The camera's shutter speed was set to 1/500th of a second to freeze the motion.
They decided to shutter the old factory after decades of operation.