Definition of lacunary in English:

lacunary

Pronunciation /ˈlakyəˌnerē/ /ˈlækjəˌnɛri/ /ləˈk(y)o͞onərē/ /ləˈk(j)unəri/

See synonyms for lacunary

adjective

  • Having gaps or missing portions.

    ‘the lacunary nature of recollected experience’
    • ‘both the index and the bibliography are lacunary’

Origin

Mid 19th century from lacuna + -ary.