the smallest unit of a chemical element

smallest part of something

the small, hard seed of food plants such as wheat and rice

seed, piece

an extremely small part

small bit

a note with half the value of a semibreve

bit

a very small bit; any (usually short) word that is not a verb, subject or object but is a necessary part of a phrase, sentence or verb

atom, piece

a small strip or piece scraped, torn or broken off something; a very small amount; to tear (paper, cloth) into small pieces

tiny piece

into very small pieces

atom, piece

a very small sport or piece (of dirt etc); a small visible spot

tiny bit

a small round mark on a surface; a dirty mark; a small drop (of liquid); a particular place; to recognize or notice (a person, thing) suddenly; to mark something with spots

mark, stain