io
io — noun
1. short for 'input/output' — the way a computer system receives data from the outs
short for 'input/output' — the way a computer system receives data from the outside world (input) and then sends processed data back out (output). Can also refer to the physical ports and hardware parts that handle this exchange.
A slow io system can make a fast computer feel sluggish during file transfers.
uncountable noun referring to a system component
Camila learned about io operations in her first programming course at university.
collocation: io operations
The new printer connects to a standard io port on the back of the computer.
The technician checked all io devices, including the keyboard, the mouse, and the monitor.
Eric optimised the database code to reduce io bottlenecks during peak traffic.
- input/output
the full form; more natural in non-technical writing
- data transfer
broader term that includes io but is not limited to it
用法筆記
Often capitalised I/O in formal technical writing. Widely understood by anyone who works with computers, though the full form 'input/output' is more common in general contexts.
常見錯誤
2. a short form used in chemistry for 'ionium', a radioactive form of the element t
a short form used in chemistry for 'ionium', a radioactive form of the element thorium (isotope ²³⁰Th) that appears naturally in some minerals and deep-sea sediments.
Kenji's research project examined how io behaves in deep-sea sediment layers.
The chemistry textbook listed io as an alternative symbol for the thorium isotope ²³⁰Th.
abbreviation for a chemical isotope
Scientists use the io content of ocean-floor samples to estimate geological dates.
Dr. Arjun explained that io has a half-life of roughly 75,000 years.
- ionium
the full chemical name; io is the abbreviated form
- thorium-230
the isotope notation, more common in modern scientific literature
用法筆記
Used almost exclusively in specialist chemistry and geology writing. Not recognised by most general readers.
io — noun
1. in ancient Greek stories, a young woman from Argos whom the god Zeus fell in lov
in ancient Greek stories, a young woman from Argos whom the god Zeus fell in love with. To protect her from the jealous anger of his wife Hera, he turned Io into a white cow (a heifer).
In art class, Aylin painted a scene showing Zeus turning Io into a white heifer.
The myth of Io explains why Argus, the hundred-eyed giant, was set to guard her.
proper noun in mythology context
Théo wrote an essay comparing the story of Io to similar Greek myths.
One of Jupiter's largest moons is named Io, after the mythological woman.
- priestess of Hera
describes Io's role in the original myth rather than being a synonym
用法筆記
Always capitalised as a proper name. This sense appears mainly in literary, art-historical, or mythological discussion.