canicular

• It was midsummer, but no words and no experience of other places can convey an idea of the canicular heat of Jerusalem. —  Tancred Or, The New Crusade
• G.G. _flames that are ... canicular. —  Poems of Henry Vaughan, Silurist, Volume II
• That is, under the canicular, or dog-star, and before the dog-star, purgations are painfull and difficill. —  Spadacrene Anglica The English Spa Fountain
• The point, however, was that they had changed places; Maggie had from her window, seen her stepmother leave the house -- at so unlikely an hour, three o'clock of a canicular August, for a ramble in garden or grove -- and had thereupon felt her impulse determined with the same sharpness that had made the spring of her companion's three weeks before. —  The Golden Bowl — Volume 2
• By comparing two successive years they could of course have got at a sidereal year; but this is what they did not do; hence the irregularity which produced the canicular cycle. —  Personal Recollections, from Early Life to Old Age, of Mary Somerville

Allen's Synonyms and Antonyms