micromanometer

As a verb pressure

is .

As an adjective pressure

is squeezed.

As a noun micromanometer is

(physics) a sensitive manometer that can measure very small differences in pressure.

As nouns the difference between manometer and micromanometer

is that manometer is an instrument to measure pressure in a fluid, especially a double-legged liquid column gauge used to measure the difference in the pressures of two fluids while micromanometer is a sensitive manometer that can measure very small differences in pressure.