Standard Lemma guide

spiegeleisen

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˈʃpiːɡəlˌaɪzən/

1

noun

Meaning 1

A ferromanganese alloy containing approximately 15% manganese and small quantities of carbon and silicon.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Examples

  • Historically, spiegeleisen was the standard form in which manganese was traded and used in steelmaking.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: spiegel, spiegel iron

Antonyms: none provided

Broader terms: pig iron

History

Etymology

From German Spiegeleisen (literally “mirror iron”).