| Subject | English | Japanese |
| phys. | addition agent | 添加物 (tenkabutsu) |
| gen. | n addition agent | 添加剤 (tenkazai) |
| gen. | n vs addition and deletion | 抜差し |
| gen. | n vs addition and deletion | 抜き差し |
| phys. | addition and substraction | 加減算 (かげんざん) |
| gen. | addition and subtraction | 加減 ichi1 news1 nf20 (かげん) |
| gen. | addition color | 和色 |
| gen. | addition constant | 付加定数 |
| gen. | addition deletion | 付加欠失 |
| gen. | addition mutation | 付加変異 |
| law | addition of claim | 請求の追加 |
| gen. | n vs addition of points | 加点 news1 nf13 |
| comp., MS | addition operator | 加算演算子 (The + character, used to indicate addition or a positive number) |
| gen. | addition polymerization | 付加重合 (fuka-jūgō) |
| phys. | addition product | 付加物 (fukabutsu) |
| gen. | n addition reaction | 付加反応 (ふか・はっんおう) |
| comp. | n addition sign | 追加記号 |
| phys. | addition theorem | 加法定理 (kahō-teiri) |
| tech. | addition theorem | 累加強さ式 (るいかつよさしき) |
| tech. | addition theorem | 累加強度式 (るいかきょうどしき) |
| phys. | addition time | 加算時間 (かさん・ぢかん) |
| gen. | n addition to | 付け加え news2 nf44 (something) |
| gen. | n vs addition to a building | 増築 news2 nf34 (ぞうちく) |
| tech. | addition to building | 建增 (たてまし) |
| tech. | addition to building | 増築 (ぞうちく) |
| law | n addition to Japan's antitrust law that allows lower fines for the first company involved in a cartel, etc. to admit their involvement | 課徴金減免制度 |
| comp. | n addition without carry | けた上げなし加算 |
| comp. | n addition without carry | 桁上げなし加算 |
| gen. | n additions and deletions | 追加削除 |
| gen. | conj and in addition to that | それも |
| comp. | n arithmetic addition | 算術加算 |
| phys. | binary addition | 2進加算 (にしん・かさん) |
| gen. | n buckwheat noodles made from buckwheat flour only, without the addition of wheat flour | 生蕎麦 |
| gen. | n buckwheat noodles made from buckwheat flour only, without the addition of wheat flour | 生そば |
| gen. | n building addition or extension | 建て増し |
| gen. | n building addition or extension | 建増し |
| tech. | chlorine addition | 塩素付加 (えんそふか) |
| chem. | n vs compound addition | 複合添加 |
| comp. | n destructive addition | 破壊加算 |
| comp., MS | fixed asset addition | 固定資産の付属品 (An add-on item to a fixed asset that is considered part of the fixed asset and is not tracked as its own fixed asset, such as an extra battery for a laptop. Typically, an add-on item is maintenance or an improvement and relates to a write-up adjustment) |
| gen. | n-adv conj in addition | 其の他 そのた is more the written form |
| gen. | exp in addition | に加え |
| gen. | adv in addition | 外に ichi1 |
| gen. | conj in addition | 兼 news1 nf04 |
| gen. | adv conj uk in addition | 猶 |
| gen. | exp conj in addition | 合わせて |
| gen. | exp conj in addition | 併せて esp. 合わせて, 合せて |
| gen. | adv uk in addition | 剰え |
| gen. | exp adv in addition | この上 |
| gen. | prt in addition | も spec1 |
| gen. | conj in addition | 加えて |
| gen. | exp in addition | その他にも |
| gen. | exp in addition | かてて加えて |
| gen. | exp adv in addition | 此の上 |
| gen. | adv uk in addition | 剰 io |
| gen. | adv uk in addition | 又と |
| gen. | exp conj in addition | 合せて |
| gen. | adv in addition | 付け加えると |
| gen. | adv conj uk in addition | 尚 ichi1 news1 nf05 |
| gen. | adv in addition | 他に |
| gen. | exp in addition | に加えて spec1 |
| gen. | conj uk in addition | 其れに ichi1 |
| gen. | n-adv conj in addition | その外 ichi1 |
| gen. | conj exp uk in addition | 御負けに |
| gen. | conj uk in addition | この外 |
| gen. | exp in addition | その上で |
| gen. | conj in addition | その上 ichi1 |
| gen. | n-adv conj in addition | その他 spec1 |
| gen. | conj in addition | 其の上 |
| gen. | exp in addition | 其の上で |
| gen. | conj exp uk in addition | お負けに |
| gen. | n-adv uk in addition to | 傍 io (そば) |
| gen. | n-adv uk in addition to | 旁 |
| gen. | n-adv uk in addition to | 側 (がわ) |
| gen. | in addition to | に spec1 |
| gen. | adv in addition to | とは別に |
| gen. | adv uk in addition to | 延いて |
| gen. | adv uk in addition to | 延て io |
| law | in addition to | を除くほか (付加を示す場合; 前項の場合を除くほか; in addition to the cases referred to in the preceding paragraph) |
| gen. | n-adv uk in addition to | 脇 |
| gen. | n-adv uk in addition to | 側ら io |
| gen. | uk in addition to... | 他 spec1 |
| gen. | uk in addition to... | 外 ichi1 |
| gen. | adv uk in addition to | 唯でさえ |
| gen. | n-adv uk in addition to | 傍ら news1 nf14 |
| gen. | adv uk in addition to | 延いては |
| gen. | exp in addition to this | それに加えて |
| law | "in addition to what is provided for in the preceding paragraph, … are prescribed by …" | 前項に規定するもののほか、…は、…で定める |
| law | "in addition to what is provided for in this Act, … are prescribed by …" | この法律に規定するもののほか、…は、…で定める |
| law | in addition to what is set forth in | に掲げるもののほか |
| phys. | logical addition | 論理加算 (ろんり・かさん) |
| gen. | n yoji making an unnecessary addition | 画蛇添足 (to) |
| gen. | n money paid in addition | 追い銭 |
| chem. | n vs multiple addition | 複合添加 |
| gen. | nucleophilic addition | 求核付加 |
| gen. | oxidative addition | 酸化的付加 |
| phys. | parallel addition | 変列加算 (へいれつ・かさん) |
| comp. | n parallel addition | 並列加算 |
| gen. | n sake brewed without addition of saccharides and no more than 120 litres of seed alcohol per tonne | 本醸造酒 |
| gen. | say in addition | 言添える |
| gen. | say in addition | 言い添える |
| gen. | n vs saying in addition | 附言 |
| gen. | n vs saying in addition | 付言 news2 nf43 |
| comp. | n serial addition | 直列加算 (ちょくれつ・かさん) |
| phys. | serial-parallel addition | 直並列加算 (ちょくへいれつ・かさん) |
| gen. | n sign of addition | 加号 (かごう) |
| gen. | standard addition method | 標準添加法 |
| gen. | n adj-no useless addition | 蛇足 |