| hypostasis |
in philosophy, the essence or essential attribute or principle of something. [4 definitions] |
| hypostatize |
to present or consider (an idea, concept, or the like) as having concrete, objective reality or form. |
| hyposulfite |
a salt of hyposulfurous acid, used in photography. |
| hyposulfurous acid |
an unstable acid found only in solution or in the form of its salts, used as a bleaching and reducing agent. |
| hypotension |
excessively low blood pressure, or an illness resulting from this condition. |
| hypotenuse |
in a right triangle, the side opposite the right angle. |
| hypothalamus |
the part of the brain below the thalamus in the ventral region of the diencephalon, important in the regulation of the autonomic nervous system and body temperature. |
| hypothecate |
to pledge (property) to another as security for a loan or other debt, without legally transferring title or ownership. |
| hypothermia |
a condition of abnormally low body temperature. |
| hypothesis |
a proposed explanation that accounts for observed phenomena or known facts and that can be used to guide further investigation. [3 definitions] |
| hypothesize |
to form a hypothesis; make an informed guess; theorize. [2 definitions] |
| hypothetical |
based on a premise rather than having substance in reality; supposed. [4 definitions] |
| hypothyroidism |
a deficiency in thyroid activity and secretion, resulting, if unchecked, in goiter and loss of vigor in victims and in cretinism in fetuses borne by them. |
| hypotonic |
in chemistry, (of a solution) having a lower osmotic pressure than another solution. [2 definitions] |
| hypoxia |
a deficiency of oxygen in bodily tissue. |
| hyrax |
any of various small plant-eating mammals of Africa and Asia, similar to rodents, that have short ears and tail and hooflike toenails. |
| hyssop |
a woody aromatic plant of the mint family that is native to Asia and bears blue flowers in spikes. |
| hysterectomy |
surgical removal of the uterus and sometimes the ovaries. |
| hysteresis |
a lag in the effect on matter after a change in forces affecting it, esp. magnetic forces. |
| hysteria |
in an individual or group, an uncontrollable outburst of fear or other emotions, producing fits of weeping, laughter, irrational behavior, or the like. [2 definitions] |
| hysteric |
(usu. pl.; used with a sing. or pl. verb) an outburst of uncontrollable sobbing or laughter. [4 definitions] |