| Noun | 1. | physical composition - the way in which someone or something is composed property - a basic or essential attribute shared by all members of a class; "a study of the physical properties of atomic particles" structure - the manner of construction of something and the arrangement of its parts; "artists must study the structure of the human body"; "the structure of the benzene molecule" phenotype - what an organism looks like as a consequence of the interaction of its genotype and the environment genetic constitution, genotype - the particular alleles at specified loci present in an organism texture, grain - the physical composition of something (especially with respect to the size and shape of the small constituents of a substance); "breadfruit has the same texture as bread"; "sand of a fine grain"; "fish with a delicate flavor and texture"; "a stone of coarse grain" karyotype - the appearance of the chromosomal makeup of a somatic cell in an individual or species (including the number and arrangement and size and structure of the chromosomes) |