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noctilucent

adjective/nɑːkɪˈluːsənt/

definition

of or relating to clouds that are luminous at night

example

The summer sky was adorned with beautiful noctilucent clouds, shining like a silver veil against the darkening horizon.

synonyms
luminousshiningglowing
word origin — The word 'noctilucent' comes from the Latin 'noctis', meaning 'of the night', and 'lucent', meaning 'shining' or 'light'.

Word Ultra — Set 206

Set 206 of Word Ultra covers 5 words: noctilucent, tintinnabular, thixotropic, lacustral, querulous. Each entry below includes its definition, an example sentence, and synonyms — practice them with the interactive cards above.

  1. noctilucent · adjective/nɑːkɪˈluːsənt/

    of or relating to clouds that are luminous at night

    The summer sky was adorned with beautiful noctilucent clouds, shining like a silver veil against the darkening horizon.

    Synonyms: luminous, shining, glowing

    Origin: The word 'noctilucent' comes from the Latin 'noctis', meaning 'of the night', and 'lucent', meaning 'shining' or 'light'.

  2. tintinnabular · adjective/ˌtɪntɪˈnæbjələr/

    relating to or resembling the sound of bells

    The tintinnabular echoes of the church bells filled the quiet village, marking the passage of time with their melodic chimes.

    Synonyms: bell-like, ringing, chime-like

    Origin: From Latin 'tintinnabulum' meaning 'bell' derived from 'tintinnare' meaning 'to ring'.

  3. thixotropic · adjective/θɪkstrəˈtɑpɪk/

    having the property of becoming less viscous when subjected to shear stress or agitation

    The thixotropic paint flows easily when stirred, allowing for smooth application on surfaces.

    Synonyms: gel-like, shear-thinning, fluid

    Origin: The term 'thixotropic' is derived from the Greek words 'thixis', meaning 'touch' or 'arrangement', and 'tropē', meaning 'turning' or 'changing'.

  4. lacustral · adjective/ləˈkʌstrəl/

    relating to or characteristic of lakes

    The lacustral ecosystem supports a diverse array of plant and animal life, making it vital for local biodiversity.

    Synonyms: lakeside, lake-related, aquatic

    Origin: from Latin 'lacustris', meaning 'of a lake', derived from 'lacus' meaning 'lake'

  5. querulous · adjective/ˈkwɛrələs/

    complaining in a petulant or whining manner

    Her querulous tone during the meeting made it difficult for anyone to take her concerns seriously.

    Synonyms: peevish, irritable, whiny

    Origin: from Latin 'querulus', meaning 'full of complaints', from 'queri' meaning 'to complain'