sefydlyn

Welsh

Etymology 1

From sefydlu (“to establish”) +‎ -yn.

Noun

sefydlyn m (plural sefydlynnau, not mutable)

  1. fixative
  2. (mathematics) invariant function

Etymology 2

From sefydlu (“to establish”) +‎ llyn (“lake, pool”).

Alternative forms

  • safydlyn

Noun

sefydlyn m (plural sefydlynnau, not mutable)

  1. stagnant pool, stagnant water
    Synonyms: merllyn, merddwr

Further reading

  • D. G. Lewis, N. Lewis, editors (2005–present), “sefydlyn”, in Gweiadur: the Welsh–English Dictionary, Gwerin
  • R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “sefydlyn”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
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