et

promeetium

1 substantive

EKI Combined Dictionary 2026

Last modified 12.02.2025

Meanings

pehme hõbevalge metall, omadustelt haruldane muldmetall (lantanoid), keemiline element järjenumbriga 61
Synonyms
  • Pm symbol

Translations

Good to know

Uusladina promethium < kreeka Prometheus 'Prometheus, Vana-Kreeka muinaskangelane'.

Usage examples
  • Radioaktiivne promeetium avastati Teise maailmasõja ajal.

Terminological databases

EKI terminibaas Esterm

ID 732223 Last modified 17.09.2015
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Domain inorganic chemistry
promeetium
Pm
promethium preferred
illinium deprecated
florentium deprecated
Pm
  • haruldaste muldmetallide hulka kuuluv radioaktiivne keemiline element, järjenr 61
  • a rare, radioactive, metallic chemical element of the lanthanide series, atomic number 61, which was first produced artificially in a nuclear reactor and is present in trace amounts as a fission product in uranium ores
promeetium
Pm symbol
promethium preferred
Good to know
  • The known uses of promethium are due to its radioactivity. Its soft beta-particle radiation can be converted to electricity in miniature batteries formed by sandwiching promethium between wafers of a semiconductor such as silicon; those batteries operate in extreme temperatures for up to five years. Other uses are as beta-radiation sources—e.g., in light sources that use phosphors to absorb beta radiation and convert it to visible light.
illinium deprecated
Good to know
  • a disused name for the element now called „promethium“
florentium deprecated
Good to know
  • a disused name for the element „promethium“
Pm symbol
prométhium
Promethium
prometium

Word forms

Inflection Type 19

Sõna lõpp hääldub kahe silbina: [ti-um].

promeetium promeetiumid
promeetiumi promeetiumide
promeetiumi promeetiume

Inflection Type 2e

Sõna lõpp hääldub ühe silbina: [tium].

promeetium promeetiumid
promeetiumi promeetiumite
promeetiumit promeetiumeid

Etymology

laensõna
  • promeetium Antiikvägilase Prometheuse nime järgi
    • promethium 'promeetium' ( Jacob Marinsky, Lawrence Glendenin 1948 )

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