what's that?; what the...
painstaking piece of work; work of great effort; tour de force; toil; labor; labour
denaturation; degeneration
infectious disease; infection
mechanism of action (e.g. drug); mode of action; action mechanism
moving; touching; stirring
sterilization; sterilisation; disinfection
protein; egg white; albumen; albumin
metabolism; renewal; regeneration; replacing the old with the new
transparency; permeability
promotion; acceleration; encouragement; facilitation; spurring on
choo-choo; chug-chug; chuff-chuff; brush-brush; scrub-scrub
spectrum (radio, etc.); spectral; spectra
side effect; adverse reaction
derisory; negligible; minimal; nominal; imperceptible
germ; germs; bacteria; something harmful; vermin
to rank with; to rank among
every conceivable; every single; every possible; all kinds of
physical properties; properties of matter; physicality