Murchison Surname Meaning. Descriptive Writing introductory reference. An Englishing of Gaelic MacMhurchaidh, 'son of Murchadh,' Englished Murdoch. Fowill Morthoison was burgess of Inverness, 1452 (Invernessiana, p. 122).
enrichment. 1  an act of enriching. 2  the state of being enriched. 3  something that enriches: the enrichments of education and travel.
Enrichment media are liquid media that increase the number of pathogens due to the presence of certain substances that discourage the multiplication of unwanted bacteria e.g. selenide F broth. This is used for enrichment of Salmonella in faeces or urine. Brain heart infusion is used for blood culture specimens.