widal test: a test for detecting typhoid fever and other salmonella infections
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
celery pine: Australasian evergreen conifer having a graceful head of foliage resembling celery that is composed of phyllodes borne in the axils of scalelike leaves