vespertinal

From vespertine +‎ -al.

vespertinal (not comparable)

1. Vespertine; occurring in the evening.
   • 1853–1864, James Russell Lowell, “(please specify the page)”, in Fireside Travels, Boston, Mass.: Ticknor and Fields, published 1864, →OCLC:

     F . became purely vespertinal, never stirring abroad till after dark

2. (botany, zoology) Opening or active in the evening.

• “vespertinal”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• pentasilver