revert(2) (iou) and Hirsch-Peiffer stain (medicine)

revert(2) (iou)

revert verb. ME.
[Old French revertir or Latin revertere, formed as RE- + vertere turn.]
I. verb intrans.
a. Recover consciousness; come to oneself again. ME-E18.
b. Improve, recover, revive; (of a plant etc.) spring up afresh. LME-L16.
Return, come or go back, to or from a place or position. Now rare. LME.
Law. Return by reversion (to). LME.
Conan Doyle The place..is only a life interest and reverts to her husband's brother.
Return to or to a person or party after estrangement or separation. LME-M16.
Return to a former subject of discourse or thought. L16.
G. Daly He reverted to a theme that had stood him in good stead.
Return to or to a former condition, custom, practice, idea, etc. E17.
Zigzag He has reverted back on this tour to being completely solo. F. Weldon Sometimes widows like to revert to their maiden names. E. P. Thompson All Howard's..work..left little lasting impression, as conditions reverted after his death. P. Ackroyd In her sickness she reverted to the helpless condition of a child.
b. Chiefly Biology. Return to an earlier, original, or primitive state or condition; reproduce the characteristics of an ancestral form. Freq. in revert to type. M19.
II. verb trans.
a. Recall. Only in ME.
b. Restore (to). LME-M17.
c. Cause to return to a former condition or practice. L20.
a. Turn away; turn, force, or drive back; withdraw. ME-M17.
b. Turn (one's eyes or steps) back; direct backwards. M17.
a. Turn the Other way; reverse, invert, turn up. Now rare. LME.
b. Math. Subject (a series) to reversion. M18.
Revoke, recall, annul. M16-M17.
revertible adjective capable of reverting, admitting of reversion, (to) L15.

Hirsch-Peiffer stain (medicine)

Hirsch-Peiffer stain
<technique> A stain used for cytologic demonstration staining of metachromatic leukodystrophy; excess sulfatides stain metachromatically (golden brown) with cresyl violet in acetic acid.

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