Obsolete form of pneumatics.

(chemistry) A piece of laboratory apparatus, consisting of a vessel filled with liquid (generally water or mercury), used for collecting gases.

(marine biology) A sac or other structure containing air and used for flotation by a marine organism, chiefly used in reference to those of kelps and siphonophores.

(biology) The state of being pneumatic, or of having a cavity or cavities filled with air.

(philately) Initialism of plate number coil. / (philately) Initialism of philatelic numismatic cover.

pneumatic

plural of pneuma

plural of pneuma

plural of pneumatization

(biology) The formation of air cavities, as in bones or a sinus