Meanings

automatic control

one's own literary work

natural person

(dying of) natural causes

spontaneous generation

natural selection

disintegration

vigilance committee

autopurificatory activity (in the natural world)

one's own (political) party

self-registering hygrometer

automobile tax

autopilot

barely keeping a business going (analogy that a bicycle falls over when its wheels cease rotating)

spontaneous recess (in the Diet)

natural beauty

natural phenomenon (phenomena)

paying one's own way

boastful speech

truck