If you mean subatomic particle as in protons neutrons and electrons, electrons have the lowest mass. If you are talking even smaller, leptons have extremely tiny rest masses.
The Masses ended in 1917.
It separates hot air masses and cold air masses
The Revolt of the Masses was created in 1930.
Gravitational pull
To spread culture and history to the ignorant masses.
Plato
If you mean 'Ignorant' it means unknowing. e.g. (exempli gratzia) you were ignorant about ignorant before you read this answer!
No you are ignorant
Ignorant mean your laking knowledge.
ignorant
It means that the person is so ignorant that they have no idea what they are ignorant of.
it means: the kind one who is sometimes ignorant. it means: the kind one who is sometimes ignorant.
be ignorant
The land masses of the Earth are the continents.
It's an insult. Ignorant means someone who is -- unaware of, unfamiliar with, inexperience with, lack of knowledge about something. Moron is -- a stupid person.
It means: ignorant idiots