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essential

1. Biochem (of an amino acid or a fatty acid) necessary for the normal growth of an organism but not synthesized by the organism and therefore required in the diet
2. derived from or relating to an extract of a plant, drug, etc.
3. Logic (of a property) guaranteed by the identity of the subject; necessary. Thus, if having the atomic number 79 is an essential property of gold, nothing can be gold unless it has that atomic number
4. Music denoting or relating to a note that belongs to the fundamental harmony of a chord or piece
5. Pathol (of a disease) having no obvious external cause
6. Geology (of a mineral constituent of a rock) necessary for defining the classification of a rock. Its absence alters the rock's name and classification
7. Music an essential note
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Although the transfer of funds from SWIFT to SWIRFT is not a legal requirement, Fitch views the likelihood of such a transfer to be high due to the essentiality of the SWIRFT program in implementing the state water plan and the Texas constitutional restrictions limiting the use of SWIFT to SWP-related funding, such as the SWIRFT program.
Last year, the Foundation for Individual Rights in Education (FIRE) conducted its first-ever comprehensive study of restrictions on speech at America's colleges and universities, "Spotlight on Speech Codes 2006: The State of Free Speech on our Nation's Campuses." In light of the essentiality of free expression to a truly liberal education, its findings were deeply disappointing.
A Note on Kripke's Footnote 56 Argument for the Essentiality of Origin, ROSS P.
Running through the discussion, as in Doshi's paradigm of village form and quirkily through the colonnades of Le Corbusier's commercial precinct, was the essentiality not of style or dogma but of life itself.
The ratings reflect the essentiality of the CFX system to commuters in the Orlando area, coupled with a demonstrated willingness and ability to implement toll increases even during challenging economic times.
He hailed His Majesty the King's assertions about the essentiality of upholding a firm united Arab stance and taking strong and urgent measures at all levels to dry up the sources of terrorism and its finances and to address the root-causes and conditions that led to its emergence, and tackling all forms of external interferences into our internal affairs, respecting the sovereignty and laws of Arab countries, prevention of exporting of violence and terrorism to other countries, and halting the hostile statements aimed at spreading chaos and sedition among peaceful peoples.
Singh said that the state government has already requested the Union Health Ministry to grant the essentiality certificate to this college as per relaxed provision so as to make it functional, besides attaching it with the existing 300-bed zonal hospital at Mandi
With Rating Outlook Stable, the rating reflects the essentiality of the tollway system, evidenced by its long-term growing traffic base and moderate price elasticity.
Al Mulla hailed His Majesty's assertions about the essentiality of upholding a firm united Arab stance and taking strong and urgent measures at all levels to dry up the sources of terrorism and its finances and to address the root-causes and conditions that led to it, which can only succeed through the tackling of all forms of external interferences into internal affairs, respecting the sovereignty and laws of Arab countries, prevention of exportation of violence and terrorism to countries, and halting the provocative instigative hostile media statements issued aimed at spreading chaos and sedition among peaceful peoples.