Definition that contains the unknown
- timidity fear of the unknown or unfamiliar or fear of making decisions
- test-cross a cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring
- titration a measured amount of a solution of unknown concentration is added to a known volume of a second solution until the reaction between them is just complete; the concentration of the unknown solution (the titer) can then be calculated
- testcross a cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring
- timidness fear of the unknown or unfamiliar or fear of making decisions
- agglutination test a blood test used to identify unknown antigens; blood with the unknown antigen is mixed with a known antibody and whether or not agglutination occurs helps to identify the antigen; used in tissue matching and blood grouping and diagnosis of infections
- timorousness fear of the unknown or unfamiliar or fear of making decisions