• WordNet 3.6
    • adj crucial of extreme importance; vital to the resolution of a crisis "a crucial moment in his career","a crucial election","a crucial issue for women"
    • adj crucial of the greatest importance "the all-important subject of disarmament","crucial information","in chess cool nerves are of the essence"
    • adj crucial having crucial relevance "crucial to the case","relevant testimony"
    • ***
Webster's Revised Unabridged Dictionary
    • Crucial Having the form of a cross; appertaining to a cross; cruciform; intersecting; as, crucial ligaments; a crucial incision.
    • Crucial Severe; trying or searching, as if bringing to the cross; decisive; as, a crucial test.
    • ***
Century Dictionary and Cyclopedia
    • crucial Having the form of a cross; transverse; intersecting; decussating: as, a crucial incision.
    • crucial In anatomy, specifically applied to two stout decussating ligaments in the interior of the knee-joint, connecting the spine of the tibia with the intercondyloid fossa of the femur.
    • crucial Decisive, as between two hypotheses; finally disproving one of two alternative suppositions. This meaning of the word is derived from Bacon's phrase instantia crucis, which be explains as a metaphor from a finger-post (crux). The supposed reference to a judicial “test of the cross,” as well as that to the testing of metals in a crucible, which different writers have thought they found in the expression, are unknown to as learned a lawyer and a chemist as Bacon and Boyle. These supposed derivations have, however, influenced some writers in their use of the word.
    • crucial Of or pertaining to a crucible; like a heated crucible as a utensil of chemical analysis.
    • crucial Pertaining to or like a cross as an instrument of torture for eliciting the truth; excessively strict and severe: said of a proceeding of inquiry.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Crucial krōō′shi-al testing, searching, from the practice of marking a testing instance with a cross to draw attention to it
    • ***


  • George Bush
    George Bush
    “I take as my guide the hope of a saint: in crucial things, unity... in important things, diversity... in all things, generosity.”
  • Paul Little
    Paul Little
    “Has it ever struck you that the vast majority of the will of God for your life has already been revealed in the Bible? That is a crucial thing to grasp.”
  • Norman Allen
    Norman Allen
    “Skill in the art of communication is crucial to a leader's success. He can accomplish nothing unless he can communicate effectively.”
  • Kareem Abdul-Jabbar
    Kareem Abdul-Jabbar
    “One man can be a crucial ingredient on a team, but one man cannot make a team.”


Webster's Revised Unabridged Dictionary
F. crucial, fr. L. crux, crucis, cross, torture. See Cross
Chambers's Twentieth Century Dictionary
Fr. crucial, from L. crux, crucis, a cross.


In literature:

One day three of us experienced a narrow escape, which serves to illustrate how keen were our captors to submit us to this crucial test.
"Sixteen Months in Four German Prisons" by Henry Charles Mahoney
This was the crucial moment of his life.
"Tom Slade on Mystery Trail" by Percy Keese Fitzhugh
It is such fools as you and I who fail because we have imagination and find ourselves at the crucial moment in the other fellow's shoes.
"The Shield of Silence" by Harriet T. Comstock
The early years are his most crucial period, and the best efforts should be expended then instead of when he is twelve or fourteen.
"What the Mother of a Deaf Child Ought to Know" by John Dutton Wright
Crucial sulcus dividing anterior convolutions.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
He also knew that something rather crucial was happening to Christendom; he thought it was getting unchristened.
"The Victorian Age in Literature" by G. K. Chesterton
Consequently he had failed to read the riddle of Matheson's motive at that crucial interview in the financier's office on the Rue Laffitte.
"Swirling Waters" by Max Rittenberg
I shall describe here a few crucial experiments only, in proof of the physiological character of electric response.
"Response in the Living and Non-Living" by Jagadis Chunder Bose
The American knew the crucial hour had come.
"Steve Yeager" by William MacLeod Raine
Ramon had seen the other creeping up, and had been talking against time till the crucial moment arrived.
"The Border Boys Across the Frontier" by Fremont B. Deering

In poetry:

Suppose I take an arrogant bomber, stroke
By stroke, up to the frazzled sun to hear
Sun-ghostlings whisper: Yes, the capital yoke-
Remove it and there's not a ghost to fear
This crucial day, whose decapitate joke
Languidly winds into the inner ear.
"More Sonnets At Christmas I" by Allen Tate

In news:

The key to finding the answer lies in Slate's 1999 Explainer about money laundering , specifically the crucial first step.
Appling, a junior guard, believed that play might have freed him up for the crucial lay-up in the final seconds.
Photo of damaged SUV is crucial in fatal hit-and-run case.
Bears' focus crucial while preparing for second exhibition.
And there's no more crucial time in a student's academic life than first grade.
Learning for life…whether the focus is on readiness for the next grade or college and career readiness, the school library program plays a crucial role in preparing students for informed living in the 21st century.
Longer lifespan makes self-health care crucial for women.
Fort Monroe becomes crucial Union linchpin .
Call it information literacy , media literacy , or network literacy , the ability to access, evaluate, synthesize, and build upon information and media are crucial skills.
One of the crucial issues for the Giants as they go through the offseason getting ready to defend their Super Bowl title is whether they indeed have an identity crisis.
NEW YORK (AP) — Just in time for the crucial winter holidays.
The organizer of several popular Twin Cities events, including the annual Lumberjack Days festival, has been charged with 10 counts after missing crucial payment deadlines and allegedly issuing bad checks.
Drug Label, Maimed Patient and Crucial Test for Justices.
No matter the size of your home, organization is crucial for an effective space.
He can make the most crucial plays at any given time in the game.

In science:

The exact form of the potential is, however, not crucial for the result.
The statistical properties of the city transport in Cuernavaca (Mexico) and Random matrix ensembles
It is crucial to distinguish the universal quantities from the model-dependent ones.
Random Matrix Theory and Chiral Symmetry in QCD
In short, understanding properties of random matrices is crucial to their analysis. A recent effort to understand the performance of the product replacement algorithm uses Kazhdan’s property (T) from the representation theory of Lie groups [LubPa]; the paper [Pa] is a useful survey.
Random matrix theory over finite fields: a survey
The crucial point in our argument is that, for a fixed time t, 1 − [Γt (ℓ)]N approaches a unit step function Θ(ℓ − ℓ×) when N → ∞, ℓ× being the step’s width (see Fig. 1).
II. Territory covered by N random walkers on stochastic fractals. The percolation aggregate
This is a very crucial point to be emphasized.
Formation of a New Class of Random Fractals in Fragmentation with Mass Loss