一度
yī​dù HSK7

once

一度 yī​dù
once adjective
one time; on one occasion; used for events that occur at regular intervals
for a time adverb
at one time in the past; once; for a period of time; often used with 曾 céng or 曾经 céng​jīng

该物种曾一度被认定为灭绝。

gāi wù​zhǒng céng yī​dù bèi rèn​dìng wéi miè​jué.

This species was once thought to be extinct.

one degree
a unit of measurement, such as one degree of temperature or one kilowatt-hour of electricity

Frequency
Movie subtitles
2.38 per million appears in 1% of films
Written text
60.6 per million

Details
HSK 2.0
Level 6
HSK 3.0
Level 7

Cross-References

Same as

Sources
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)