- (of a singularity of a function of a complex variable) noting that the Laurent series at the point has an infinite number of terms with negative powers.
- (of a discontinuity) noting that the function is discontinuous and has no limit at the point.Compare removable (def. 2).
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Example sentences from the Web for essential
Like plenty of other modern direct-to-consumer companies, influencer marketing has been an essential part of Fabletics’ journey.Fabletics’ Adam Goldenberg and Kevin Hart on what’s next for the activewear empire|Lucas Matney|September 17, 2020|TechCrunch
Before understanding Canix, it’s essential to know the landscape of growing legal cannabis in the United States.Canix aims to ease cannabis cultivators’ regulatory bookkeeping|Matt Burns|September 17, 2020|TechCrunch
These changes have stopped the essential flow of nutrient-rich sediment to the river’s deltas and the wetlands they support.Soggy coastal soils? Here’s why ecologists love them|Alison Pearce Stevens|September 17, 2020|Science News For Students
We know that our body is colonized by microbes, particularly in the gut, which perform metabolic processes essential to our lives.What the Meadow Teaches Us - Issue 90: Something Green|Andreas Weber|September 16, 2020|Nautilus
Thus, it is essential to build public confidence in the vaccine’s safety and effectiveness, so more people will volunteer to get vaccinated.6 questions that must be answered in the race for a vaccine|jakemeth|September 15, 2020|Fortune
But Winning Marriage will be essential for the historian who, someday, tries to tell the full story.The Real Story Behind the Fight for Marriage Equality|E.J. Graff|December 30, 2014|DAILY BEAST
Law is essential to freedom because it safeguards citizens against misconduct and abuse.
Dana Rubenstein of The New York Observer wrote that “essential to the experience was segregation.”I Watched a Casino Kill Itself: The Awful Last Nights of Atlantic City’s Taj Mahal|Olivia Nuzzi|December 8, 2014|DAILY BEAST
Young Living traffics in essential oils designed to help relax and rejuvenate.
Claiming to be useful against Ebola, autism, and cancer, Young Living Essential Oils came under fire from the FDA.
Water itself is of course essential to the growth of every plant, but the benefits of Irrigation reach far beyond this.Glances at Europe|Horace Greeley
As a rule, however, persistent glycosuria is diagnostic of diabetes mellitus, of which disease it is the essential symptom.A Manual of Clinical Diagnosis|James Campbell Todd
Such are most probably given by the essential oils, which vary in amount in different species of the plant.
But the essential problem of to-day is to know how far we are to depart from its principles.
In its essential nature socialism is nothing but a proposal for certain kinds of economic reform.