Variable and Open

variable

noun

Something that is likely to vary; something that is subject to variation.
- usage: "the weather is one variable to be considered"
A quantity that can assume any of a set of values.
- synonyms: variable quantity
A star that varies noticeably in brightness.
- synonyms: variable star
A symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity.

adjective

Liable to or capable of change.
- usage: "rainfall in the tropics is notoriously variable"; "variable winds"; "variable expenses"
Marked by diversity or difference.
- usage: "the varying angles of roof slope"; "nature is infinitely variable"
- synonyms: varying
Used of a device) designed so that a property (as e. G. Light) can be varied. (
- usage: "a variable capacitor"; "variable filters in front of the mercury xenon lights"

(n.) Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.
(n.) That which is variable; that which varies or is subject to change.
(a.) Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.
(n.) A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.
(a.) Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.
(n.) A shifting wind or one that varies in force.

Webster's Revised Unabridged Dictionary

Variable is an element in a model. For example, in the model RS&Pt+1 = a + b Tbill t + et, where RS&Pt+1 is the return on the S&P in month t+1 and Tbill is the Tbill return at month t, both RS&P and Tbill are "variables" because they change through time; i. E., they are not constant.

open

noun

A clear or unobstructed space or expanse of land or water.
- usage: "finally broke out of the forest into the open"
- synonyms: clear
Where the air is unconfined.
- usage: "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open"
- synonyms: outdoors, out-of-doors, open air
A tournament in which both professionals and amateurs may play.
Information that has become public.
- usage: "all the reports were out in the open"; "the facts had been brought to the surface"
- synonyms: surface

verb

Cause to open or to become open.
- usage: "Mary opened the car door"
- synonyms: open up
Start to operate or function or cause to start operating or functioning.
- usage: "open a business"
- synonyms: open up
Become open.
- usage: "The door opened"
- synonyms: open up
Begin or set in action, of meetings, speeches, recitals, etc..
- usage: "He opened the meeting with a long speech"
Spread out or open from a closed or folded state.
- usage: "open the map"; "spread your arms"
- synonyms: unfold, spread, spread out
Make available.
- usage: "This opens up new possibilities"
- synonyms: open up
Become available.
- usage: "an opportunity opened up"
- synonyms: open up
Have an opening or passage or outlet.
- usage: "The bedrooms open into the hall"
Make the opening move.
- usage: "Kasparov opened with a standard opening"
Afford access to.
- usage: "the door opens to the patio"; "The French doors give onto a terrace"
- synonyms: afford, give
Display the contents of a file or start an application as on a computer.

adjective

Affording unobstructed entrance and exit; not shut or closed.
- usage: "an open door"; "they left the door open"
- synonyms: unfastened
Affording free passage or access.
- usage: "open drains"; "the road is open to traffic"; "open ranks"
With no protection or shield.
- usage: "the exposed northeast frontier"; "open to the weather"; "an open wound"
- synonyms: exposed
Open to or in view of all.
- usage: "an open protest"; "an open letter to the editor"
Used of mouth or eyes.
- usage: "keep your eyes open"; "his mouth slightly opened"
- synonyms: opened
Not having been filled.
- usage: "the job is still open"
Accessible to all.
- usage: "open season"; "an open economy"
Not defended or capable of being defended.
- usage: "an open city"; "open to attack"
- synonyms: assailable, undefendable, undefended
Of textures. ( full of small openings or gaps)
- usage: "an open texture"; "a loose weave"
- synonyms: loose
Having no protecting cover or enclosure.
- usage: "an open boat"; "an open fire"; "open sports cars"
Set theory. ( of an interval that contains neither of its endpoints)
Not brought to a conclusion; subject to further thought.
- usage: "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined"
- synonyms: undecided, undetermined, unresolved
Not sealed or having been unsealed.
- usage: "the letter was already open"; "the opened package lay on the table"
- synonyms: opened
Without undue constriction as from e. G. Tenseness or inhibition.
- usage: "the clarity and resonance of an open tone"; "her natural and open response"
Ready or willing to receive favorably.
- usage: "receptive to the proposals"
- synonyms: receptive
Open and observable; not secret or hidden.
- usage: "an overt lie"; "overt hostility"; "overt intelligence gathering"; "open ballots"
- synonyms: overt
Not requiring union membership.
- usage: "an open shop employs nonunion workers"
Possibly accepting or permitting.
- usage: "a passage capable of misinterpretation"; "open to interpretation"; "an issue open to question"; "the time is fixed by the director and players and therefore subject to much variation"
- synonyms: capable, subject
Affording free passage or view.
- usage: "a clear view"; "a clear path to victory"; "open waters"; "the open countryside"
- synonyms: clear
Openly straightforward and direct without reserve or secretiveness.
- usage: "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk"
- synonyms: candid, heart-to-heart
Ready for business.
- usage: "the stores are open"

(v.i.) To expand; to spread out; to be disclosed; as, the harbor opened to our view.
(n.) Open or unobstructed space; clear land, without trees or obstructions; open ocean; open water.
(v.i.) To unclose; to form a hole, breach or gap; to be unclosed; to be parted.
(v.i.) To begin; to commence; as, the stock opened at par; the battery opened upon the enemy.
(a.) Produced by an open string; as, an open tone.
(v.i.) To bark on scent or view of the game.
(v.t.) To spread; to expand; as, to open the hand.
(v.t.) To disclose; to reveal; to interpret; to explain.
(a.) Not drawn together, closed or contracted; extended; expanded; as, an open hand; open arms; an open flower; an open prospect.
(a.) Not closed or stopped with the finger; -- said of the string of an instrument, as of a violin, when it is allowed to vibrate throughout its whole length.
(a.) Free of access; not shut up; not closed; affording unobstructed ingress or egress; not impeding or preventing passage; not locked up or covered over; -- applied to passageways; as, an open door, window, road, etc.; also, to inclosed structures or objects; as, open houses, boxes, baskets, bottles, etc.; also, to means of communication or approach by water or land; as, an open harbor or roadstead.
(v.t.) To enter upon; to begin; as, to open a discussion; to open fire upon an enemy; to open trade or correspondence; to open a case in court or a meeting.
(a.) Free to be used, enjoyed, visited or the like; not private; public; unrestricted in use; as, an open library, museum, court or other assembly; liable to the approach, trespass or attack of any one; unprotected; exposed.
(a.) Uttered with a relatively wide opening of the articulating organs; -- said of vowels; as, the an far is open as compared with the a in say.
(a.) Without reserve or false pretense; sincere; characterized by sincerity; unfeigned; frank; also, generous; liberal; bounteous; -- applied to personal appearance or character, and to the expression of thought and feeling, etc.
(a.) Not of a quality to prevent communication, as by closing water ways, blocking roads, etc.; hence, not frosty or inclement; mild; -- used of the weather or the climate; as, an open season; an open winter.
(a.) Free; disengaged; unappropriated; as, to keep a day open for any purpose; to be open for an engagement.
(v.t.) To make known; to discover; also, to render available or accessible for settlements, trade, etc.
(a.) Not concealed or secret; not hidden or disguised; exposed to view or to knowledge; revealed; apparent; as, open schemes or plans; open shame or guilt.
(v.t.) To loosen or make less compact; as, to open matted cotton by separating the fibers.
(a.) Free or cleared of obstruction to progress or to view; accessible; as, an open tract; the open sea.
(a.) Not settled or adjusted; not decided or determined; not closed or withdrawn from consideration; as, an open account; an open question; to keep an offer or opportunity open.
(v.t.) To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from; as, to open a door; to open a box; to open a room; to open a letter.
(a.) Uttered, as a consonant, with the oral passage simply narrowed without closure, as in uttering s.

Webster's Revised Unabridged Dictionary

Open is used in the context of general equities. Having either buy or sell interest at the indicated price level and side of a preceding trade. "Open on the buy/sell side" means looking for buyers/sellers (for someone who is a seller/buyer). Antithesis of clean.

Variable and Open in Power Thesaurus