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Frequency: 567
JLPT N1
Grade 6

Meanings

lineage
system

Readings

On — Chinese-derived reading, usually for compounds
ケイ

Common Words

Noun
Freq #1644
1

Noun, used as a suffix

system; lineage; group

Examples
WindowsOSではアドミニストレーターアカウントがルートに相当する。
With Windows OS systems 'administrator account' corresponds to 'root'.
2

Mathematics

corollary

3

Noun, used as a suffix; Geology

system (range of strata that correspond to a particular time period)

4

Noun, used as a suffix

(taxonomical) series

いとう
Noun
Freq #9004
1

system

Examples
システムのこの予測されなかった機能不全は不適切な配線系統によって引き起こされた。
This unexpected malfunctioning of the system was caused by improper wiring.
2

lineage; ancestry; family line

3

group (e.g. of colors) (colours); family (e.g. of languages); party; school (of thought)

4

close (evolutionary) relationship

5

a population sharing a common ancestor (in genetics); strain (e.g. bacterial)

けい
Noun
Freq #10413
1

family lineage

Examples
音楽家の家系のお生まれですか。
Did you come from a musical family?
いけい
Noun suffix
Noun
Freq #16343
1

system; organization; organisation; architecture

Examples
彼らはその体系を大変な思索と労力を費やして仕上げた。
They worked out the system with much thought and labor.
たいいくかいけい
~の Adj.
Freq #21156
1

sports-minded; sports-oriented

ょっけい
Noun
~の Adj.
Freq #21732
1

direct descent; direct line

いれつ
Freq #23203
1

Common noun

series; sequence; system; succession

2

Common noun

keiretsu (group); conglomeration of businesses linked by cross-shareholdings

3

Nouns which may take the genitive case particle 'no'

affiliated; subsidiary

いたいけい
Noun
Freq #23945
1

ecosystem

Examples
地球の生態系はある程度自己修正されるもので、その結果が他の変化によって隠されているという可能性もある。
The earth's ecosystem is to some extent self-correcting, so it is also possible that the effects are being masked by other changes.
いふ
Noun
Freq #26948
1

genealogy; lineage; family tree; pedigree

しきけいとう
Noun
Freq #28034
1

chain of command

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