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| English thesaurus | |||
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| SIM | |||
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Signal : 518 phrases in 38 subjects |
| American usage, not spelling | 1 |
| Analytical chemistry | 6 |
| Antennas and waveguides | 1 |
| Automated equipment | 1 |
| Automatic control | 14 |
| Automobiles | 1 |
| Chemistry | 1 |
| Communications | 8 |
| Construction | 14 |
| Economics | 1 |
| Electrical engineering | 1 |
| Electronics | 29 |
| Finances | 2 |
| General | 6 |
| Industry | 2 |
| Isolation | 1 |
| Life sciences | 1 |
| Lighting other than cinema | 9 |
| Magnetics | 3 |
| Medical | 5 |
| Microsoft | 4 |
| Nautical | 3 |
| Pharmacy and pharmacology | 2 |
| Piezoelectric crystals | 2 |
| Power lines | 48 |
| Power system protection | 14 |
| Radio | 88 |
| Radiobiology | 2 |
| Rail transport | 90 |
| Road works | 1 |
| Semiconductors | 2 |
| Sound recording | 4 |
| Telecommunications | 56 |
| Telegraphy | 62 |
| Telephony | 3 |
| Transport | 18 |
| Vacuum tubes | 6 |
| Video recording | 6 |