it is essential that

  • 101essential oil — noun Date: 1674 any of a class of volatile oils that give plants their characteristic odors and are used especially in perfumes and flavorings, and for aromatherapy compare fixed oil …

    New Collegiate Dictionary

  • 102essential fish habitat — any habitat that is of basic importance to the survival and well being of a fish population or community, either a habitat used throughout life or for a specific activity such as spawning or feeding …

    Dictionary of ichthyology

  • 103essential amino acids — Those amino acids that cannot be synthesized by an organism and must therefore be present in the diet. The term is often applied anthropocentrically to those amino acids required by humans (Ileu, Leu, Lys, Met, Phe, Thr, Try and Val), though rats …

    Dictionary of molecular biology

  • 104essential amino acid — noun One of the naturally occurring amino acids that the human body cannot synthesize, and so must be provided by dietary protein. See Also: nonessential amino acid …

    Wiktionary

  • 105essential nutrient — noun A compound that must be obtained from food for survival …

    Wiktionary

  • 106essential fatty acid — noun any fatty acid required for human metabolism that cannot be synthesized by the body and must be present in the diet; originally designated as vitamin F …

    Wiktionary

  • 107essential amino acids — the nine α amino acids required for protein synthesis that cannot be synthesized by humans and must be obtained in the diet: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine …

    Medical dictionary

  • 108essential blepharospasm — blepharospasm that is present when there is no abnormality of the eye or trigeminal (fifth cranial) nerve …

    Medical dictionary

  • 109essential proteinuria — functional proteinuria that is not associated with or followed by renal disease, such as effort proteinuria and the postural proteinurias. Called also benign p …

    Medical dictionary

  • 110essential oil — es.sential oil n an oil from a plant that has a strong smell and is used for making ↑perfume or in ↑aromatherapy …

    Dictionary of contemporary English