• WordNet 3.6
    • n hebdomad any period of seven consecutive days "it rained for a week"
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Century Dictionary and Cyclopedia
    • n hebdomad The number seven; the idea of seven, or the quality of being seven in number.
    • n hebdomad The sum of seven things; a collection of seven persons or things; specifically, a group of seven days; a week.
    • n hebdomad In some Gnostic systems, a group of super-human beings, angels, or divine emanations; in the systems of Basilides and Valentinus, the sphere of the Demiurge, sublunary, and lower than the ogdoad, or a title of the Demiurge himself. The Gnostic uses of the word were apparently developed from the idea of the seven planets or planetary heavens, or that of gods, spirits, or angels personifying, indwelling, ruling, or creating them; then, in a collective sense, it came to mean the whole sublunary sphere, or its ruler.
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Chambers's Twentieth Century Dictionary
    • n Hebdomad the number seven, a group of seven things, a week: in some Gnostic systems, a group of superhuman beings, angels, or divine emanations, the sphere of the Demiurge lower than the ogdoad—from the idea of the seven planets
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Chambers's Twentieth Century Dictionary
L. hebdomadalis—Gr. hebdomas, a period of seven days—hepta, seven.


In literature:

The list of the beauties who displayed their hebdomadal finery at the parish church of Waverley was neither numerous nor select.
"Waverley" by Sir Walter Scott
My main impression is of wonder and horror at the amount of hebdomadal labour implicit in them.
"Yet Again" by Max Beerbohm
The list of the beauties who displayed their hebdomadal finery at the parish church of Waverley was neither numerous nor select.
"Waverley, Or 'Tis Sixty Years Hence, Complete" by Sir Walter Scott
The heavy hebdomadals complain that the style of the communications sent them is too diffuse.
"Punchinello, Vol. 1, No. 12, June 18, 1870" by Various
Dodge, and publish an hebdomadal.
"Homeward Bound" by James Fenimore Cooper
Even the hebdomadal excursions of the citizen will conduct him over or near many such scenes.
"The Mirror of Literature, Amusement, and Instruction, No. 351" by Various
At Oxford the Hebdomadal Council have suspended the filling of the Professorship of Modern Greek for six months.
"Mr. Punch's History of the Great War" by Punch
He invariably puts 'hebdomadal' for 'weekly.
"Hodge and His Masters" by Richard Jefferies
Apart from this hebdomadal use its proper function was to hold dirty dishes and soiled clothes for the washing.
"Punch, Or The London Charivari, Vol. 146., January 21, 1914" by Various
What was it to me what they were now doing in opposition to the New Test proposed by the Hebdomadal Board?
"Apologia Pro Vita Sua" by John Henry Cardinal Newman

In news:

Charles made room in his schedule for hebdomadal visits with his math tutor throughout the semester.