LYSIMETER
Ly*sim"e*ter, n. Etym: [Gr. -meter.]
Defn: An instrument for measuring the water that percolates through a certain depth of soil. Knight.
LYSIS
Ly"sis, n. Etym: [NL., fr. Gr. (Med.)
Defn: The resolution or favorable termination of a disease, coming on gradually and not marked by abrupt change.
Note: It is usually contrasted with crisis, in which the improvement is sudden and marked; as, pneumonia ends by crisis, typhoid fever by lysis.
LYSSA
Lys"sa, n. Etym: [NL. See Lytta.] (Med.)
Defn: Hydrophobia.
Note: The plural (Lyssæ) has been used to signify the pustules supposed to be developed under the tongue in hydrophobia.
LYTERIAN
Ly*te"ri*an, a. Etym: [Gr. (Med.)
Defn: Termination a disease; indicating the end of a disease.