Biology Prefixes and Suffixes: diplo-

Gonorrhea Bacterium
Conceptual visualization of the diplococcus bacterium gonorrhea (Neisseria gonorrhoeae) that causes the sexually transmitted disease gonorrhea. Credit: Science Picture Co/Subjects/Getty Images

The prefix (diplo-) means double, twice as many or twice as much. It is derived from the Greek diploos meaning double.

Words Beginning With: (Diplo-)

Diplobacilli (diplo-bacilli): This is the name given to rod-shaped bacteria that remain in pairs following cell division. They divide by binary fission and are joined end to end.

Diplobacteria (diplo-bacteria): Diplobacteria is the general term for bacteria cells that are joined in pairs.

Diplobiont (diplo-biont): A diplobiont is an organism, such as a plant or fungus, that has both haploid and diploid generations in its life cyle.

Diploblastic (diplo-blastic): This term refers to organisms that have body tissues that are derived from two germ layers: the endoderm and ectoderm. Examples include cnidarians: jellyfish, sea anemones, and hydras.

Diplocardia (diplo-cardia): Diplocardia is a condition in which the right and left halves of the heart are separated by a fissure or groove.

Diplocardiac (diplo-cardiac): Mammals and birds are examples of diplocardiac organisms. They have two separate circulatory pathways for blood: pulmonary and systemic circuits.

Diplocephalus (diplo-cephalus): Diplocephalus is a condition in which a fetus or conjoined twins develop two heads.

Diplochory (diplo-chory): Diplochory is a method by which plants disperse seeds. This method involves two or more distinct mechanisms.

Diplococcemia (diplo-cocc-emia): This condition is characterized by the presence of diplococci bacteria in the blood.

Diplococci (diplo-cocci): Spherical or oval-shaped bacteria that remain in pairs following cell division are called diplococci cells.

Diplocoria (diplo-coria): Diplocoria is a condition that is characterized by the occurrence of two pupils in one iris. It may result from eye injury, surgery, or it may be congenital.

Diploe (diploe): Diploe is the layer of spongy bone between the inner and outer bone layers of the skull.

Diploid (diplo-id): A cell that contains two sets of chromosomes is a diploid cell. In humans, somatic or body cells are diploid. Sex cells are haploid and contain one set of chromosomes.

Diplogenic (diplo-genic): This term means producing two substances or having the nature of two bodies.

Diplogenesis (diplo-genesis): The double formation of a substance, as seen in a double fetus or a fetus with double parts, is known as diplogenesis.

Diplograph (diplo-graph): A diplograph is an instrument that can produce double writing, such as embossed writing and normal writing at the same time.

Diplohaplont (diplo-haplont): A diplohaplont is an organism, such as algae, with a life cycle that alternates between fully developed haploid and diploid forms.

Diplokaryon (diplo-karyon): This term refers to a cell nucleus with double the diploid number of chromosomes. This nucleus is polyploid meaning that it contains more than two sets of homologous chromosomes.

Diplont (diplo-nt): A diplont organism has two sets of chromosomes in its somatic cells. Its gametes have a single set of chromosomes and are haploid.

Diplopia (diplo-pia): This condition, also known as double vision, is characterized by seeing a single object as two images. Diplopia can occur in one eye or both eyes.

Diplosome (diplo-some): A diplosome is a pair of centrioles, in eukaryotic cell division, that aids in spindle apparatus formation and organization in mitosis and meiosis. Diplosomes are not found in plant cells.

Diplozoon (diplo-zoon): A diplozoon is a parasitic flatworm that fuses together with another of its kind and the two exist in pairs.