noun which may take the genitive case particle 'no', noun
Used as a noun or with の to mean 'second' in order, rank, or sequence. Common in compounds like 二次試験 (second-stage exam).
noun-modifying (irregular)
Prenominal use (adj-f) meaning 'secondary' or 'of lesser importance'. Often in fixed terms like 二次的な問題 (secondary issue).
noun-modifying (irregular)
quadratic; second-order
Mathematics term; used prenominally in phrases like 二次関数 (quadratic function) or 二次方程式 (quadratic equation).
The second-stage exam will be held next week.
That is merely a secondary issue.
Please draw the graph of the quadratic function.
He is only interested in fictional characters.
Since I passed the first-round exam, I'll take the second-round exam next week.
This medicine has secondary side effects.
We learned how to solve quadratic equations in math class.
Ever since he got into 2D characters, he's been watching nothing but anime.
After the drinking party, we all went to the after-party.
二次 is a casual abbreviation of 二次元, both used in otaku slang to mean fictional 2D characters as opposed to real people.
一次 means 'primary/first' while 二次 means 'secondary/second', as in 一次試験 (first-round exam) vs 二次試験 (second-round exam).
三次元 refers to the real, three-dimensional world, the opposite of 二次 (short for 二次元) which refers to fictional 2D anime/manga characters.
二字 means 'two characters/letters', a homophone of 二次 that is easily mixed up despite having an unrelated meaning.
二時 means 'two o'clock', a homophone of 二次 that learners often confuse when listening rather than reading.
after-party; second party of the night · second meeting
quadratic field
two-dimensional; 2D · fictional; drawn; 2D (anime/manga)
secondary station
secondary
Standard kanji spelling; high-frequency news and common usage.
Numerical variant, often seen in technical or abbreviated contexts.
Compound of 二 (two) and 次 (order, next). The otaku slang sense is a shortening of 二次元 (two-dimensional).
two-dimensional complex; preference for 2D characters over real people
secondary use; reuse
derivative work; fan work