natural Definition

based on an inherent sense of right and wrong

being in accordance with or determined by nature

having or constituting a classification based on features existing in nature

one born without the usual powers of reason and understanding

a sign ♮ placed on any degree of the musical staff to nullify the effect of a preceding sharp or flat

a note or tone affected by the natural sign

a rock formation in which the central bottom part has been completely eroded away, leaving a structure that looks like a bridge

a system of managing childbirth in which the mother receives preparatory education in order to remain conscious during and assist in delivery with minimal or no use of drugs or anesthetics

a method of birth control that involves abstention from sexual intercourse during the period of ovulation which is determined through observation and measurement of bodily symptoms

food that has undergone minimal processing and contains no preservatives or artificial additives

gas issuing from the earth's crust through natural openings or bored wells; especially : a combustible mixture of methane and other hydrocarbons used chiefly as a fuel and raw material

gas manufactured from organic matter (such as coal)

a treatise on some aspect of nature

the natural development of something (such as an organism or disease) over a period of time

the study of natural objects especially in the field from an amateur or popular point of view

a large granular lymphocyte capable especially of destroying tumor cells or virally-infected cells without prior exposure to the target cell and without having it presented with or marked by a histocompatibility antigen —called also NK cell

a body of law or a specific principle held to be derived from nature and binding upon human society in the absence of or in addition to positive law