Usage of the character 期

window period (time between infection and the appearance of detectable antibodies)
period during which sth is lacking (boyfriend or girlfriend, work, revenue, production of a commodity etc)
lull
hiatus

dòngqíngqī

动情期

[動情期]

estrus
the rutting season
on heat

qīzhōngkǎo

期中考

[期中考]

mid-term exam

shìhūnqī

适婚期

[適婚期]

age range suitable for getting married

qīngniánqī

青年期

[青年期]

adolescence

shìyòngqī

试用期

[試用期]

trial period
probationary period

tóngshíqī

同时期

[同時期]

at the same time
contemporary

yīng'érqī

婴儿期

[嬰兒期]

infancy

bájiéqī

拔节期

[拔節期]

elongation stage
jointing stage (agriculture)

kǒuyùqī

口欲期

[口欲期]

oral stage (psychology)

yùlíngqī

育龄期

[育齡期]

childbearing age

bǎoxiūqī

保修期

[保修期]

guarantee period
warranty period

zhōuqījiě

周期解

[週期解]

periodic solution (math.)

bànshuāiqī

半衰期

[半衰期]

half-life

liǎngxīngqī

两星期

[兩星期]

fortnight

yǒuxiàoqī

有效期

[有效期]

period of validity
sell-by date

Xīngqītiān

星期天

[星期天]

Sunday
CL:個／个 (gè)

bùyìngqī

不应期

[不應期]

refractory period (physiology)

dōngxiēqī

冬歇期

[冬歇期]

winter break

Xīngqīliù

星期六

[星期六]

Saturday

wúqībié

无期别

[無期別]

to part for an unspecified period
to take leave from indefinitely

wúxiànqī

无限期

[無限期]

indefinitely; of unlimited duration

xīngqījǐ

星期几

[星期幾]

which day of the week

wéichǎnqī

围产期

[圍產期]

perinatal period

bīngchuānqī

冰川期

[冰川期]

ice age

shuāituìqī

衰退期

[衰退期]

recession (in economics)

běnxīngqī

本星期

[本星期]

this week

yúxùnqī

渔汛期

[漁汛期]

fishing season

kuānxiànqī

宽限期

[寬限期]

grace period
period of grace

chuāngkǒuqī

窗口期

[窗口期]

window (interval of time)
(epidemiology) window period

dàzhāiqī

大斋期

[大齋期]

Lent (Christian period of forty days before Easter)

yīniánqī

一年期

[一年期]

one year period (in a contract or budget)

qiánfúqī

潜伏期

[潛伏期]

incubation period (of disease)

bǎoxiānqī

保鲜期

[保鮮期]

shelf life
freshness date

hóngxùnqī

洪汛期

[洪汛期]

flood season

zhōngqī'ái

终期癌

[終期癌]

terminal cancer

qīmòkǎo

期末考

[期末考]

final exam

xìnglěiqī

性蕾期

[性蕾期]

phallic stage (psychology)

qīwàngzhí

期望值

[期望值]

expectations
(math) expected value

Xīngqīsì

星期四

[星期四]

Thursday

bùdìngqī

不定期

[不定期]

non-scheduled
irregularly

yúxùnqī

鱼汛期

[魚汛期]

variant of 漁汛期／渔汛期 (yúxùnqī)

zhìqīfèi

滞期费

[滯期費]

demurrage charge (shipping) (currency)

gāngyùqī

肛欲期

[肛欲期]

anal stage (psychology)

dàbīngqī

大冰期

[大冰期]

ice age

qīhuòhéyuē

期货合约

[期貨合約]

futures contract (finance)

wǎnqī'áizhèng

晚期癌症

[晚期癌症]

terminal cancer

bùqī'éryù

不期而遇

[不期而遇]

meet by chance
have a chance encounter

hòuhuìyǒuqī

后会有期

[後會有期]

I'm sure we'll meet again some day. (idiom)
Hope to see you again.

shǔqīxuéxiào

暑期学校

[暑期學校]

summer school

shēngmìngzhōuqī

生命周期

[生命週期]

life cycle

zuìhòuqīxiàn

最后期限

[最後期限]

deadline
final time limit (for project)

dìngqīcúnkuǎn

定期存款

[定期存款]

fixed deposit
time deposit
certificate of deposit (banking)

mìyuèjiàqī

蜜月假期

[蜜月假期]

honeymoon

yáoyáowúqī

遥遥无期

[遙遙無期]

far in the indefinite future (idiom); so far away it seems forever

huǎnqīfùkuǎn

缓期付款

[緩期付款]

to defer payment

duǎnqīróngzī

短期融资

[短期融資]

short-term financing

huóqīcúnkuǎn

活期存款

[活期存款]

demand deposit

chángqīyǐlái

长期以来

[長期以來]

for a long time

dǐngshèngshíqī

鼎盛时期

[鼎盛時期]

flourishing period
golden age

qiānfārìqī

签发日期

[簽發日期]

date of issue (of document)

Rìzhìshíqī

日治时期

[日治時期]

the period of Japanese rule

xìbāozhōuqī

细胞周期

[細胞周期]

cell cycle

yùqītuīlǐ

预期推理

[預期推理]

predictive inference

kāifāzhōuqī

开发周期

[開發周期]

development cycle
development period
also written 開發週期／开发周期

tàoqībǎozhí

套期保值

[套期保值]

to hedge (one's bets)
to defend against risk

chūshēngrìqī

出生日期

[出生日期]

date of birth

yǒuxiàoqīnèi

有效期内

[有效期內]

within the period of validity
before the sell-by date

yánqīfùkuǎn

延期付款

[延期付款]

to defer payment
to pay back over long term

huóqīzījīn

活期资金

[活期資金]

funds on call
invested sum that can be cashed

huóqīdàikuǎn

活期贷款

[活期貸款]

demand loan (i.e. loan that the borrower can demanded back at any time)

zhǐshùqīquán

指数期权

[指數期權]

index options

chángqīfànpiào

长期饭票

[長期飯票]

(fig.) guarantee of financial support for the rest of one's life

shuāngzhōuqīxìng

双周期性

[雙週期性]

(math.) double periodicity

dìngqīchǔxù

定期储蓄

[定期儲蓄]

fixed deposit (banking)

gōnggòngjiàqī

公共假期

[公共假期]

public holiday

zhōuqīhánshù

周期函数

[周期函數]

periodic function

yuǎnqīhéyuē

远期合约

[遠期合約]

forward contract (finance)

zǎoqīxiàoyìng

早期效应

[早期效應]

early effect

shīxiàorìqī

失效日期

[失效日期]

expiry date (of document)

jiézhǐqīxiàn

截止期限

[截止期限]

deadline

yǒuxiàorìqī

有效日期

[有效日期]

expiration date; expiry date

xiānqīlùyīn

先期录音

[先期錄音]

(filmmaking) to prerecord a musical soundtrack to which actors will later synchronize their performance during filming

kāifāzhōuqī

开发周期

[開發週期]

development cycle
development period

lìshǐshíqī

历史时期

[歷史時期]

historical period

rènzhíqījiān

任职期间

[任職期間]

term of office
while holding a post

chángqīgòngcún

长期共存

[長期共存]

long-term coexistence

yǒuqītúxíng

有期徒刑

[有期徒刑]

limited term of imprisonment (i.e. anything less than life imprisonment)

zàizhèqījiān

在这期间

[在這期間]

during time
in this time

hòuhuìwúqī

后会无期

[後會無期]

to meet again at unspecified date
meeting postponed indefinitely

bùqī'érzhì

不期而至

[不期而至]

to arrive unexpectably
unexpected

zǒngtǒngrènqī

总统任期

[總統任期]

presidential term of office
presidency

jíshèngshíqī

极盛时期

[極盛時期]

most flourishing period
Golden Age

shànggèxīngqī

上个星期

[上個星期]

last week

bànpáichūqī

半排出期

[半排出期]

half-life

guòdùshíqī

过渡时期

[過渡時期]

transition

qiánjǐngkěqī

前景可期

[前景可期]

to have a promising future
to have bright prospects

fēnqīfùkuǎn

分期付款

[分期付款]

to pay in installments
payment in installments

wúqītúxíng

无期徒刑

[無期徒刑]

life imprisonment

qīqī'ài'ài

期期艾艾

[期期艾艾]

stammering (idiom)

yùqīyòngtú

预期用途

[預期用途]

intended use

huóqīzhànghù

活期帐户

[活期帳戶]

current account (in bank)

xiàgèxīngqī

下个星期

[下個星期]

next week

bīnghéshíqī

冰河时期

[冰河時期]

ice age

jìdéqījiān

既得期间

[既得期間]

vesting period (in finance)

jīngjìzhōuqī

经济周期

[經濟週期]

economic cycle

yuánsùzhōuqībiǎo

元素周期表

[元素週期表]

periodic table of the elements (chemistry)

édípǔsīqī

俄狄浦斯期

[俄狄浦斯期]

oedipal phase (psychology)

bùqīrán'érrán

不期然而然

[不期然而然]

happen unexpectedly
turn out contrary to one's expectations

kuàisùdòngyǎnqī

快速动眼期

[快速動眼期]

REM sleep

zàisùsòngqījiān

在诉讼期间

[在訴訟期間]

pendente lite
during litigation

dàoqīshōuyìlü

到期收益率

[到期收益率]

(finance) yield to maturity (YTM)

sǐxínghuǎnqīzhíxíng

死刑缓期执行

[死刑緩期執行]

deferred death sentence
abbr. to 死緩／死缓 (sǐhuǎn)

xìndàiwéiyuēdiàoqī

信贷违约掉期

[信貸違約掉期]

credit default swap (finance)

yùqīshōurùpiàojù

预期收入票据

[預期收入票據]

revenue anticipation note (RAN, financing)

guójìrìqībiàngēngxiàn

国际日期变更线

[國際日期變更線]

international date line

Yēsū Jīdū Hòuqī Shèngtú Jiàohuì

耶稣基督后期圣徒教会

[耶穌基督後期聖徒教會]

The Church of Jesus Christ of Latter-day Saints

Lúndūn Guójì Jīnróng Qīhuò Jiāoyìsuǒ

伦敦国际金融期货交易所

[倫敦國際金融期貨交易所]

London International Financial Futures and Options Exchange (LIFFE)