| Subject | English | Japanese |
| phys. | Abelian extension field | アーベル拡大体 (Āberu-kakudaitai) |
| comp., MS | application extension services | アプリケーション拡張サービス (In Silverlight, classes that extend the application model by providing services that can participate in the application life cycle) |
| comp., MS | behavior extension element | ビヘイビアー拡張要素 (An XML element in a configuration file that allows you to configure a service behavior) |
| gen. | brand extension strategy | ブランド拡大戦略 |
| comp., MS | client extension control | クライアント拡張コントロール (A user interface control that can be added to Microsoft Dynamics CRM entity forms and within the application toolbar or navigation area of an entity form. These controls are configured in XML within ISV.Config and are designed to allow the inclusion of functionality from another web application within Microsoft Dynamics CRM. There are three types of client extension controls: Menu Items, Buttons, Entity Form Navigation areas) |
| comp. | n code extension character | コード拡張文字 |
| cables | cord extension set | プラグまたはコネクター付き延長コード |
| electr.eng. | cord extension set | 延長コードセット |
| gen. | crack extension force | 亀裂進展力 |
| gen. | crack extension force | き裂進展力 |
| gen. | crossed extension reflex | 交差伸展反射 |
| electr.eng. | electronic extension unit | 電子延長ユニット |
| construct. | extension and alteration of building | 増改築 (ぞうかいちく) |
| gen. | n extension and structural alteration of building | 増改築 (ぞうかいちく) |
| tech. | extension arm | エキステンション•アーム |
| construct. | extension bar | エキステンションバー (ekisutenshon-bā) |
| tech. | extension boom | エキステンション•プーム |
| construct. | extension cord | 延長コード (えんちょう・こうど) |
| construct. | extension cord | エキステンシヨンコード (ekisutenshon-kōdo) |
| gen. | extension joint | 伸長節理 |
| gen. | n extension ladder | 繰出し梯子 |
| gen. | n extension ladder | 繰り出しばしご |
| gen. | n extension ladder | 繰り出しはしご (くり・だし・はしご) |
| gen. | n extension ladder | 繰り出し梯子 news1 nf24 |
| gen. | n extension lectures | 公開講座 |
| tech. | extension library service | エキステンション•ライプラリー•サービス |
| tel. | extension line | 内線 |
| construct. | extension line | 寸法引出線 (すんぼうひきだしせん) |
| gen. | extension line | 寸法補助線 (すんぽう・ほぢょ・せん) |
| comp., MS | extension method | 拡張メソッド (A static method that can be invoked by using instance method syntax. In effect, extension methods make it possible to extend existing types and constructed types with additional methods) |
| gen. | extension method | 伸長法 |
| gen. | extension nozzle | 延長ノズル |
| gen. | n extension number | 内線番号 |
| gen. | n yoji extension of a straight line | 延長線上 |
| tech. | extension of approach surface | 延長進人表面 (えんちょうしんにゅうひょうめん) |
| tech. | extension of building | 建增 (たてまし) |
| tech. | extension of building | 増築 (ぞうちく) |
| gen. | extension of dam | ダムの嵩上げ |
| gen. | n extension of new character forms | 拡張新字体 |
| gen. | extension of period | 期間の延長 |
| gen. | extension of period | 期間の延期 |
| comp. | n extension of physical delivery address components | 拡張物理的配達アドレス構成要素 |
| comp. | n extension of postal OR address components | 拡張郵便ＯＲアドレス構成要素 |
| law | extension of security interest to the proceeds of the collateral | 物上代位 |
| tech. | extension of slope | 配延 (はいのび) |
| gen. | extension of the main room of a home | 小座敷 (in traditional palatial-style architecture) |
| gen. | n obsc extension of the main room of a home | 放ち出で (in traditional palatial-style architecture) |
| gen. | n obsc extension of the main room of a home | 放ち出 (in traditional palatial-style architecture) |
| gen. | Extension of Time for Completion | 工期延長 |
| gen. | n extension of visa permit | 在留期間更新許可 |
| gen. | n extension of women's rights | 女権拡張 |
| gen. | n adj-no extension on payment | 支払い猶予 |
| gen. | n adj-no extension on payment | 支払猶予 (しはらいゆうよ) |
| gen. | n extension phone | 親子電話 (and its main line) |
| gen. | extension pipe | 継足し管 |
| comp., MS | extension point | 拡張点 (A location within a use case at which an action sequence from another use case may be inserted. Within a use case, each extension point name must be unique. Extension points appear in a compartment at the bottom of the Use Case shape) |
| gen. | extension reflex | 伸展反射 |
| comp. | n extension sign | 拡張記号 |
| construct. | extension strain | 相対伸び (そうたい・のび) |
| tech. | extension table | 伸長式テーブル (しんちょうしきテーブル) |
| tech. | extension table | 繰出テープル (くりだしテープル) |
| gen. | n extension telephone | 内線電話 |
| gen. | n yoji conclusion following as an extension of | 延長線上 (an argument) |
| gen. | injection molding with extension nozzle | ロングノズル式射出成形 |
| comp., MS | OData Extension Provider | OData 拡張機能プロバイダー (A Business Connectivity Services feature that enables developers to extend functionality that is provided by the OData connector) |
| tel. | subscriber's extension station | 内線 |
| cables | thermocouple extension cable | 補償導線 |
| radio | threshold extension demodulation | しきい値改善復調 |
| gen. | virtual crack extension method | 仮想き裂進展法 |
| gen. | virtual crack extension method | VCE法 |