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单词 cross-staff
释义

cross-staff

[ kraws-staf, -stahf, kros- ]
/ ˈkrɔsˌstæf, -ˌstɑf, ˈkrɒs- /

noun, plural cross-staffs, cross-staves.Astronomy.

an instrument for measuring the angle of elevation of heavenly bodies, consisting of a calibrated staff with another shorter staff perpendicular to and sliding on it.
Also called forestaff, Jacob's staff.

Origin of cross-staff

1400–50, for an earlier sense; late Middle English

Words nearby cross-staff

cross-sectional study, cross-sell, cross-slide, cross someone's palm with silver, cross someone's path, cross-staff, cross-sterile, cross-stitch, cross-stratification, cross street, cross-string
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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更新时间:2024/11/12 1:35:38