established practice; custom
permanent; perpetual; lasting
constant; invariable; chronic; everlasting
homeostasis; homoeostasis; constancy
fixed property; real property; fixed occupation
starship; interstellar spacecraft
10^52 (or 10^56); innumerable
a constant (e.g. in science)
permanent establishment (in tax law)
star catalog; star catalogue
identity mapping; identity function
sphere of fixed stars (in the Ptolemaic system)
starship; interstellar spacecraft
regular event; annual event
quasi-stellar object; QSO; quasar
quasi-stellar object; QSO; quasar
permanent income hypothesis
identity function; identity operator
heng (hexagram 32 of the I Ching: duration)
perennial river; perennial stream; permanent river
permanent establishment (in tax law)