| Part of Speech | Definition | |
| Adjective | 1. Allowing passage in either of four directions; as, a four-way cock, or valve.[Websters]
2. Being quaternary or quadrupedal. [Eve - graph theoretic] 3. Adjective base of the adverb four-waily.[Eve - graph theoretic] | |
| Adverb Form (four-waily) | 1. Virtually never used adverbial inflection of the adjective four-way.[Eve - graph theoretic] | |
Source: Webster's Revised Unabridged Dictionary (1913), compiled from various sources, under license. | Top | |
Date "FOUR-WAY" was first used in popular English literature: sometime before 1914. (references) |
Common Expressions: FOUR-WAY
| Expressions | Definition | ||
| Four-way cock | A cock connected with four pipes or ports, and having two or more passages in the plug, by which the adjacent pipes or ports may be made to communicate; formerly used as a valve in the steam engine, and now for various other purposes. In the illustration, a leads to the upper end of a steam engine cylinder, and b to the lower end; c is the steam pipe, and d the exhaust pipe. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||
Specialty Expressions: FOUR-WAY
| Expressions | Domain | Definition | |
| Four-way dip | Mining | In seismic operations, a dip determined by spreads placed in four directions from a shot point. Three are essential, and the fourth serves as a check. (references) | |
| Four-way pallet | Transportation | A pallet designed so that the forks of a fork lift truck can be inserted from all four sides. See Fork lift. (references) | |
| Four-way selector valve | Mechanical Engineering | Manual demand input offering choice which has four fluid-flow positions. Source: European Union. (references) | |
| Four-way splitter | Electrical Engineering | A device that splits the signal from the preselector of the dynamic adaptive total area coverage base station into four parts: a) to the commutating switch for the scan receiver, b) to one of 6 mixer modules for the first 8 channels, and c) to one of 6 mixer modules for the second 8 channels (or spare for 8-channel receiver), and d) spare. Source: European Union. (references) | |
| Four-way valve | Aerospace | Valve having four controlled working passages such that there are two simultaneous flow paths through the valve; commonly used to control double-acting actuators. (references) | |
| Four-way valve | Physics | A multi-orifice variable flow control valve with supply, return and two control ports arranged so that the valve action in one direction throttles supply to control port A (2) and throttles control port B (4) to return. Reversed valve action throttles supply to control port B, and throttles control port A to return. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
