| Swiss cheese model(technology, entity, form, concept) |
| White-Juday warp-field interferometer(technology, entity, form, concept) |
| Wirth's law(technology, entity, form, concept) |
| Woodward effect(technology, entity, form, concept) |
| access stratum(technology, entity, form, concept) |
| add-in(technology, entity, form, concept) |
| add-on(technology, entity, form, concept) |
| addin(technology, entity, form, concept) |
| addon(technology, entity, form, concept) |
| advanced composite material(technology, entity, form, concept) |
| advanced wireless service(technology, entity, form, concept) |
| aerospace engineering(technology, entity, form, concept) |
| aircraft instrument(technology, entity, form, concept) |
| alcubierre drive(technology, entity, form, concept) |
| amplification factor(technology, entity, form, concept) |
| amplifier(technology, entity, form, concept) |
| announcement(technology, entity, form, concept) |
| anti-gravity(technology, entity, form, concept) |
| anti-nuclear movement(technology, entity, form, concept) |
| applet(technology, entity, form, concept) |