monobasic

[ mon-uh-bey-sik ]

adjective

1. Chemistry. (of an acid) containing one replaceable hydrogen atom.
2. Biology. monotypic.

monobasic

/ ˌmɒnəʊˈbeɪsɪk /

adjective

1. chem (of an acid, such as hydrogen chloride) having only one replaceable hydrogen atom per molecule

monobasic

/ mŏn′ə-bā′sĭk /

1. Relating to an acid that contains only one hydrogen atom that can be replaced in an acid-base reaction. Hydrochloric acid (HCl) and nitric acid (HNO 3 ) are monobasic acids.
2. Of or relating to a compound that contains one metal ion or positive radical.

Other Words From

• mon·o·ba·sic·i·ty [mon-, uh, -bey-, sis, -i-tee], noun

Word History and Origins

Origin of monobasic¹

First recorded in 1835–45; mono- + basic

Example Sentences

According to a fact sheet on the FDA's website for the Pfizer-BioNTech COVID-19 vaccine, the vaccine contains only mRNA, lipids, potassium chloride, monobasic potassium phosphate, sodium chloride, dibasic sodium phosphate dihydrate and sucrose — none of which are ferromagnetic.

From Salon

The vaccine also contains four salts: potassium chloride, monobasic potassium phosphate, basic sodium phosphate dihydrate and sodium chloride.

From New York Times

Monac′id, capable of saturating a single molecule of a monobasic acid; Monac′tinal, single-rayed.—n.

From Project Gutenberg

Monobasic, mon-ō-bā′sik, adj. having one base, of an acid combining with a univalent basic radical to form a neutral salt.

From Project Gutenberg

They are all monobasic acids; the lower members are colourless liquids, and the higher members from C7H15COOH upwards are colourless solids.

From Project Gutenberg