tonometer /tō-nomˈə-tər/

1. A device for determining the frequencies of tones, esp one consisting of tuning forks (music)
2. An instrument for measuring fluid pressure (eg within the eyeball), blood pressure or vapour pressure

tonomˈetry noun

• pearl-sheller
• pearl-shellers
• pearl-shelling
• pearl-shells
• pearl-spar
• pearl-spars
• pearl-stone
• pearl-tapioca
• pearl-white
• pearlwort
• pearlworts
• pearly
• pearly gates
• pearly king
• pearly nautilus
• pearly queen
• pearly whites
• pearmain
• pearmains
• pearmonger
• pearmongers
• pear-push
• pear-pushes
• pears
• pear-shaped