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(1) In classical prosody, a foot consisting of three short syllables.

(2) In Russian versification, the term sometimes refers to a dactyl, amphibrach, or anapest that lacks an accent, for example:

Pervoe délo u deda—

Potolkovat’ s muzhikom.

(N. A. Nekrasov)

Such omissions were rare in the 19th century, occurring primarily in the first foot of a dactyl, as in the above example. In the 20th century they became more common and occurred both at the beginning of lines and in the middle of lines.

References in periodicals archive ?
Other devices included Leica TC1800 electronic tachymeter, a micrometric table, a surveying tripod, three-axis photographic head--Manfrotto 405 Geared Head, geodetic tripod for engineering purposes with a jib, two tribrachs, two targets and the observation pillar.
The measurements are conducted in the Laboratory on the observation pillar equipped with the tribrach.
One part originates in the near vicinity of the antenna (pillar/tripod, tribrach, mounting adapter, station marker, antenna ground plane, etc.
One part is invoked by the near field of the antenna (pillar/tripod, tribrach, adapter, marker, ground plane, etc.
Carlson CR2 (2 ) Robotic Total Station W/ ZRT81 LR Bluetooth Handle,2 batteries, charger, tribrach, case, tools, lens kit, 256MB CF card
Tenders are invited for Pentax Electronic Theodolite Or Similar To Model Eth-502 Without Stand Specifications: Magnification : 30X, Dual Display, With Detachable Tribrach Least Count 1 /5 , Accuracy : 2
TPS400 User manual, English / CD-ROM TPS User Documentation GDF111 BASIC Tribrach, w/o plummet, Red & Green (2) GEB 211, Lithium-Ion batteries, 2ah, rechargeable GKL211-Charger BASIC, for Li_Ion batteries GEB221 & GEB 211 car adapter cable and adapter included.
1) Heavy duty Tribrach with optical plummet and adjustable circular level vial.
Tenders are invited for Procurement of DGPS Instruments (Receiver with internal memory or SD Card 2GB or more, Aluminium Telescopic Tripod, Tribrach, Height Adopter with optical Plummet, Rechargeable Batteries, Quick Charger, Carrying Case, Post Processing Software in Computer ) for the Modern Survey Work.
The traditional survey tool is a "total station," which is a conventional survey system with an instrument usually referred to as a gun, plus required prisms, poles, tripods, batteries, and tripod-mounted levels called tribrachs.