cu
cu — abbreviation
1. a very informal written short form of 'see you', used in a casual text message o
a very informal written short form of 'see you', used in a casual text message or email to say goodbye when you expect to meet or speak again soon.
I'll send the tickets tonight. Cu at the station tomorrow.
cu + place/time in a casual message
At the end of her text, Ayesha typed cu and a smiley face.
end a text with cu
The group chat went quiet after Jisoo wrote cu before dinner.
Christopher ended the note with cu because he would see Noor after class.
文法句型
cu
cu + time/place expression
end a message with cu
用法筆記
Common only in very casual digital writing between friends or family. It is unusual in formal emails, school assignments, or messages to someone you do not know well.
常見錯誤
2. a written short form of 'cubic', mainly used with units of measurement to show v
a written short form of 'cubic', mainly used with units of measurement to show volume.
The ad said the freezer offered 12 cu ft of storage space.
cu ft for volume in an ad
On the worksheet, students changed cu cm into millilitres.
cu + unit in school measurement work
The builder ordered 3 cu m of concrete for the small wall.
A label on the tank showed its volume as 0.8 cu yd.
- cubic
the full word, used when space is not limited
文法句型
cu + unit
cu ft
cu m
用法筆記
Usually seen in tables, ads, labels, and technical writing, not spoken aloud. It comes before a unit such as ft, m, cm, or yd to show three-dimensional volume.
常見錯誤
cu — symbol
1. the chemical symbol for copper, the red-brown metal used in wires, coins, and pi
the chemical symbol for copper, the red-brown metal used in wires, coins, and pipes, seen in formulas, charts, and lab notes.
Kemi wrote Cu under element 29 on the classroom chart.
Cu on the periodic table
The lab sheet said the wire was made of Cu, not Al.
Cu in a materials label
Beatriz measured 3 g of Cu before heating the metal strip.
The factory label listed Cu and Zn for the brass parts.
A science poster showed why Cu carries electricity so well.
- copper
the full element name, used in normal speech and writing
文法句型
Cu on the periodic table
[number] g of Cu
Cu + another symbol
用法筆記
Write it with a capital C and a lower-case u. In speech, people usually say the full word 'copper' instead of reading the two letters aloud.