1. (noun) (nontechnical usage) a tiny piece of anything

• atom
• corpuscle
• mote
• particle
• speck

1. (noun) (physics and chemistry) the simplest structural unit of an element or compound

• building block
• unit

2. (noun) (nontechnical usage) a tiny piece of anything

• material
• stuff

1. (noun) (physics and chemistry) the simplest structural unit of an element or compound

• chemical science
• chemistry
• natural philosophy
• physics

1. (noun) (physics and chemistry) the simplest structural unit of an element or compound

• coenzyme
• dipole molecule
• edta
• ethylenediaminetetraacetic acid
• macromolecule
• supermolecule
• protein molecule

2. (noun) (nontechnical usage) a tiny piece of anything

• chylomicron
• flyspeck
• grain
• grinding
• identification particle

1. (noun) (physics and chemistry) the simplest structural unit of an element or compound

• molecular

2. (noun) (nontechnical usage) a tiny piece of anything

• atomic
• atomise
• atomize
• molecular