separatrix vs traverse

noun

A terminator: a line on a partially-illuminated surface separating the lit and shaded regions.
The ⟨L⟩ or pipe ⟨|⟩ mark formerly used to divide integers from decimals.
The proofreader's mark resembling a slash ⟨ / ⟩ or vertical bar ⟨ | ⟩ placed after a note in the margin to indicate that it should replace the item(s) struckthrough in the running text or to separate it from other margin notes.
The line between regions having different magnetic fields.
The boundary separating two modes of behavior in a differential equation.

noun

A line lying across a figure or other lines; a transversal.
In trench warfare, a defensive trench built to prevent enfilade.
A formal denial of some matter of fact alleged by the opposite party in any stage of the pleadings. The technical words introducing a traverse are absque hoc ("without this", i.e. without what follows).
Something that thwarts or obstructs.
The zigzag course or courses made by a ship in passing from one place to another; a compound course.
A gallery or loft of communication from side to side of a church or other large building.
A route used in mountaineering, specifically rock climbing, in which the descent occurs by a different route than the ascent.
A series of points, with angles and distances measured between, traveled around a subject, usually for use as "control" i.e. angular reference system for later surveying work.
A traverse board.

adj

adv

verb

To use the motions of opposition or counteraction.
To travel across, often under difficult conditions.
To lay in a cross direction; to cross.
To (make a cutting, an incline) across the gradients of a sloped face at safe rate.
To plane in a direction across the grain of the wood.
To deny formally.
To visit all parts of; to explore thoroughly.
To climb or descend a steep hill at a wide angle (relative to the slope).
To rotate a gun around a vertical axis to bear upon a military target.
To act against; to thwart or obstruct.
To pass over and view; to survey carefully.