[hahy-drom-i-ter] /haɪˈdrɒm ɪ tər/
an instrument for determining the specific gravity of a liquid, commonly consisting of a graduated tube weighted to float upright in the liquid whose specific gravity is being measured.
an instrument for measuring the relative density of a liquid, usually consisting of a sealed graduated tube with a weighted bulb on one end, the relative density being indicated by the length of the unsubmerged stem
1670s, from hydro- + meter (n.3).
hydrometer hy·drom·e·ter (hī-drŏm’ĭ-tər)
An instrument used to determine specific gravity, especially a sealed graduated tube, weighted at one end, that sinks in a fluid to a depth indicating the fluid’s specific gravity. Also called gravimeter.
hy’dro·met’ric (hī’drə-mět’rĭk) adj.
An instrument used to measure the density of a liquid as compared to that of water. Hydrometers consist of a calibrated glass tube ending in a weighted glass sphere that makes the tube stand upright when placed in a liquid. The lower the density of the liquid, the deeper the tube sinks.
hydrometra hy·dro·me·tra (hī’drō-mē’trə) n. The accumulation of thin mucus or other watery fluid in the uterus.
hydrometrocolpos hy·dro·me·tro·col·pos (hī’drō-mē’trō-kŏl’pəs) n. The accumulation and distention of the uterus and vagina by a fluid other than blood or pus.
hydromicrocephaly hy·dro·mi·cro·ceph·a·ly (hī’drō-mī’krō-sěf’ə-lē) n. Microcephaly associated with an increase in cerebrospinal fluid.
[hahy-druh-mawr-fik] /ˌhaɪ drəˈmɔr fɪk/ adjective 1. of or relating to soil having characteristics that are developed when there is excess water all or part of the time.