| Subject | English | Greek |
| environ. | technical instruction The education, instruction, or discipline pertaining to or connected with the mechanical or industrial arts and the applied sciences | τεχνική οδηγία |
| environ. | technical instruction | τεχνική οδηγία |
| environ. | technical instruction air | τεχνική οδηγία για τον αέρα |
| transp., avia. | technical instructions | τεχνικές οδηγίες |