- n Tylenchus type genus of the family Tylenchidae
Century Dictionary and Cyclopedia
- n tylenchus A genus of minute parasitic nematoid worms, of the family Anguillulidæ. Some of them do much damage to crops, as the wheat-worm, T. tritici, which causes the disease called ear-cockle and purples, and T. devastatrix, the stem-eelworm of clover. Some of these worms were early known as vibrios, and they were formerly placed in the more comprehensive genus Anguillula.