The word "recessive" refers to a trait or gene that is not dominant or doesn't show up as strongly. It is less likely to be seen or expressed compared to its counterpart, which is called the dominant trait or gene. Full definition
Among the 22 patients with ROH in this study, homozygous variants in autosomal recessive genes accounted for the majority (66 %) of diagnoses. (kidsgenomics.org)
Based on these studies, CA in the Old English Sheepdog is shown to be transmitted by an autosomal recessive gene with complete penetrance. (oldenglishsheepdogclubofamerica.org)
Many bad diseases and traits will only be expressed when there are two copies of recessive genes for the condition. (breedingbusiness.com)