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Discover LudwigThe phrase "a essential" is not correct in written English.
The correct form is "an essential" because "essential" begins with a vowel sound.
Example: "Water is an essential resource for all living beings."
Alternatives: "a crucial" or "a vital".
Exact(28)
If a medicine is considered eligible for reimbursement, it will be put on one of two positive lists: List A, essential list providing 100% reimbursement of the reference price for listed products, and List B, supplementary list where patients are charged co-payments [ 8 ].
a, Essential steps in device fabrication.
a, Essential genes in the K562 cell background.
It's regarded a essential in a world marketplace.
a, Essential genes identified in this study substantially overlap with previous studies.
Some common examples (shown here) include ethylene (used to make polyethylene), 2-methyl-1,3-butadieneisoprene (used to make rubber), and vitamin A (essential for vision).
Similar(32)
The use of nisin variants (30 μM) with low concentrations of thymol (0.015%), carvacrol (0.03%) and trans-cinnamaldehyde (0.035%) resulted in extended lag phases of growth compared to those for corresponding nisin A-essential oil combinations.
A good thick towel is an essential.
It's an essential one.
That's an essential distinction.
Iodine is an essential micronutrient.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com