- 第二天 dì'èrtiān next daythe next day; the following day; the morrow
- 第二次 dì'èrcì the second timethe second time; second in a series
- 第二轮 dì'èrlún second roundthe second round of a match, competition, or election
- 第二位 dì'èrwèi second place
- 第二季度 dì'èrjìdù second quarterthe second quarter of a calendar or financial year
- 第二代 dì'èrdài second generationThe generation of children succeeding their parents; the next generation of people
- 第二产业 dì'èrchǎnyè secondary industrySecondary industry; specifically referring to the manufacturing, construction, and processing sectors.
- 第二性 dì'èrxìng secondary(bound form) secondary; specifically used in philosophy to describe properties that are not essential or primary
- 第二职业 dì'èrzhíyè second joba second job or sparetime work that provides additional income beyond one's primary occupation
- 第二审 dì'èrshěn second instanceA higher court's review of a case following an appeal from the first trial.
- 第二声 dì'èrshēng second toneThe second tone in Mandarin Chinese; also known as the rising tone.
- 第二次世界大战 dì'èrcìshìjièdàzhàn World War IIThe global conflict that lasted from 1939 to 1945 between the Allied and Axis powers
- 第二次汉字简化方案 dì'èrcìhànzìjiǎnhuàfāng'àn Second Chinese Character Simplification SchemeA set of simplified Chinese characters issued by the Chinese government in 1977 and later abolished in 1986.
- 第二次色 dì'èrcìsè secondary colora color produced by mixing two primary colors in equal proportions
- 第二级产业 dì'èrjíchǎnyè secondary industrythe sector of the economy concerned with manufacturing, construction, and processing of raw materials
- 第二线 dì'èrxiàn second linethe rear line or a position behind the scenes, often referring to a secondary or supporting role rather than the front line
- 第二课堂 dì'èrkètáng second classroomRefers to educational activities and learning environments outside the formal classroom, such as extracurricular activities, clubs, or social practical training designed to develop a student's skills.
- 第二岛链 dì'èrdǎoliàn Second Island Chain(geopolitics) Second Island Chain, a strategic arc of islands stretching from Japan's Bonin Islands and the Mariana Islands to Guam and Papua New Guinea
- 国语注音符号第二式 guóyǔzhùyīnfúhàodì'èrshì MPS IIMandarin Phonetic Symbols II, a system of Romanization for Chinese used in Taiwan from 1986 to 2002
- 注音符号第二式 zhùyīnfúhàodì'èrshì MPS IIMandarin Phonetic Symbols II, a romanization system formerly used in Taiwan
- 第二世界 dì'èrshìjiè the Second World (Three Worlds Theory)In the Three Worlds Theory, the group of developed nations positioned between the superpowers and the developing world
- 第二个人 dì'èrgerén the second personthe second person; someone else or a third party
- 第二人称 dì'èrrénchēng second personRefers to the person being spoken to, for example [[你|你|ni3]], [[您|您|nin2]], or [[你们|你們|ni3 men5]].
- 第二型糖尿病 dì'èrxíngtángniàobìng type 2 diabetesType 2 diabetes; a chronic condition that affects the way the body processes blood sugar
- 北京第二外国语学院 běijīngdì'èrwàiguóyǔxuéyuàn Beijing International Studies University / Beijing Number 2 Foreign Languages InstituteBeijing International Studies University (BISU); a public research university in Beijing specializing in foreign languages and tourism management
- 第二性征 dì'èrxìngzhēng secondary sex characteristicsExternal physical and behavioral traits that appear in humans and animals after reaching sexual maturity, distinguishing the sexes beyond the primary reproductive organs
- 第二把手 dì'èrbǎshǒu second-in-commandThe person whose authority is second only to the leader, such as a deputy or co-chairperson
- 第二春 dì'èrchūn second springLiterally "second spring", used to describe a new lease of life or a rebirth in one's personal development; can also refer to the revival of a career or a business that has regained vitality.
- 第二梯队 dì'èrtīduì second echelonThe second group or rank in an organizational sequence, such as a second-tier team in a competition; specifically, the second group of personnel in a succession plan, such as backup or reserve cadres being groomed to replace current leaders.
