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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

matter go
that which has mass and occupies space

substance go
the real physical matter of which a person or thing consists

material, stuff go
the tangible substance that goes into the makeup of a physical object

chemical, chemical substance go
material produced by or used in a reaction involving changes in atoms or molecules

compound, chemical compound go
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

polymer go
a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers

ribonucleic acid, RNA
(biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes

noun.substance

3 Subcategories

messenger RNA, mRNA, template RNA, informational RNA go
the template for protein synthesis
nuclear RNA, nRNA go
ribonucleic acid found in the nucleolus of the cell
transfer RNA, tRNA, acceptor RNA, soluble RNA go
RNA molecules present in the cell (in at least 20 varieties, each variety capable of combining with a specific amino acid) that attach the correct amino acid to the protein chain that is being synthesized at the ribosome of the cell (according to directions coded in the mRNA)