əˈveɪləb(ə)l ˈfʌŋk(t)ʃənəl ˈɒ.pə.ɹə.bəl ˈjuː.zə.bəl convenient for use or disposal the house is available after July 1 2000 square feet of usable office space fit or ready for use or service the toaster was still functional even after being dropped the lawnmower is a bit rusty but still usable an operational aircraft capable of being put to use usable byproducts