Meanings

half subtractor

half-duplex transmission

we learn by teaching

covalent radius

bond radius

half an hour

merman

semipermeable membrane

semipermeability

semi-transmissive liquid crystal

semi-transmissive liquid crystal display

semitransparent body

semi-transmissive liquid crystal panel

semi-major axis (esp. in orbital matters)

semi-minor axis (esp. in orbital matters)

750cc motorcycle

semi-automatic

semi-manual (e.g. manufacture)

Japanese giant salamander (Andrias japonicus)

fire alarm ringing continuously to warn that a fire is extremely near