Dictionary: A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z


[hohl-mee-uh m] /ˈhoʊl mi əm/

noun, Chemistry.
a rare-earth, trivalent element found in gadolinite. Symbol: Ho; atomic weight: 164.930; atomic number: 67.
a malleable silver-white metallic element of the lanthanide series. Symbol: Ho; atomic no: 67; atomic wt: 164.93032; valency: 3; relative density: 8.795; melting pt: 1474°C; boiling pt: 2700°C

rare earth element, named by French chemist Lecoq de Boisbaudran (1838-1912) in 1886, from holmia “holmium oxide,” a Modern Latin word coined by the earth’s discoverer, Swedish chemist Per Teodor Cleve (1840-1905), in 1879 from Holmia, Latin name of Stockholm.

holmium hol·mi·um (hōl’mē-əm)
Symbol Ho
A soft malleable rare-earth element. Atomic number 67; atomic weight 164.930; melting point 1,472°C; boiling point 2,700°C; specific gravity 8.80; valence 3.
Symbol Ho
A soft, silvery, malleable metallic element of the lanthanide series. Its compounds are highly magnetic. It is mainly used in scientific research but has also been used to make electronic devices. Atomic number 67; atomic weight 164.930; melting point 1,461°C; boiling point 2,600°C; specific gravity 8.803; valence 3. See Periodic Table.


Read Also:

  • Holm-oak

    noun 1. an evergreen oak, Quercus ilex, of southern Europe, having foliage resembling that of the holly. noun 1. an evergreen Mediterranean oak tree, Quercus ilex, widely planted for ornament: the leaves are holly-like when young but become smooth-edged with age Also called holm, holly oak, ilex

  • Holo-

    1. a combining form meaning “whole,” “entire,” used in the formation of compound words: holomorphic. combining form 1. whole or wholly: holograph, holotype, Holarctic before vowels, hol-, word-forming element meaning “whole, entire, complete,” from Greek holo-, comb. form of holos “whole, entire, complete,” also “safe and sound,” from PIE *sol-wo-, from root *sol- (see safe […]

  • Holobenthic

    /ˌhɒləˈbɛnθɪk/ adjective 1. (of an animal) completing its life cycle in the ocean depths

  • Holoblastic

    [hol-uh-blas-tik, hoh-luh-] /ˌhɒl əˈblæs tɪk, ˌhoʊ lə-/ adjective, Embryology. 1. (of certain eggs) undergoing total cleavage, resulting in equal blastomeres. /ˌhɒləˈblæstɪk/ adjective 1. (embryol) of or showing cleavage of the entire zygote into blastomeres, as in eggs with little yolk Compare meroblastic holoblastic hol·o·blas·tic (hŏl’ə-blās’tĭk, hō’lə-) adj. Exhibiting cleavage in which the entire egg separates […]

Disclaimer: Holmium definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.