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: H HÜ Hæ Hô H- H. H2 H< Ha Hb Hc Hd He Hf Hg Hh Hi Hl Hm Hn Ho Hp Hq Hr Hs Ht Hu Hw Hy Hz

Table of Contents POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

hafnium

POS

Noun

HYPHEN

haf=ni=um

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WORDNET DICTIONARY

Noun hafnium has 1 sense

hafnium(n = noun.substance) atomic number 72, hf - a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons; Array

is a kind of metal, metallic element

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CIDE DICTIONARY

hafnium, n.

A metallic element of atomic number 72 present together with zirconium to the extent of 1% to 5% in zirconium minerals. It is a poisonous, ductile metal with a brilliant silver luster, has an atomic weight of 178.49, and has a high melting point (2227norium. [1913 Webster]

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OXFORD DICTIONARY

hafnium, n. Chem. a silvery lustrous metallic element occurring naturally with zirconium, used in tungsten alloys for filaments and electrodes.

Usage

Symb.: Hf.

Etymology

mod.L f. Hafnia Copenhagen

For further exploring for "hafnium" in Webster Dictionary Online