| rolling | 1. Rotating on an axis, or moving along a surface by rotation; turning over and over as if on an axis or a pivot; as, a rolling wheel or ball. 2. Moving on wheels or rollers, or as if on wheels or rollers; as, a rolling chair. 3. Having gradual, rounded undulations of surface; as, a rolling country; rolling land. Rolling bridge. See the Note under Drawbridge. Rolling circle of a paddle wheel, the circle described by the point whose velocity equals the velocity of the ship. Rolling fire, tackle used to steady the yards when the ship rolls heavily. Source: Websters Dictionary (01 Mar 1998) |
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| rolling circle | A mechanism for the replication of circular DNA. (05 Mar 2000) |
| rolling circle mechanism | <molecular biology> A mechanism of DNA replication in many viral DNAs, in bacterial f factors during mating and of certain DNAs in gene amplification in eukaryotes. DNA synthesis starts with a cut in the + strand at the replication origin, the 5' end rolls out and replication starts at the 3' side of the cut around the intact circular DNA strand. Replication of the 5' end (tail) takes place by the formation of Okazaki fragments. (18 Nov 1997) |
| rolling-pin | A cylindrical piece of wood or other material, with which paste or dough may be rolled out and reduced to a proper thickness. Source: Websters Dictionary (01 Mar 1998) |
| pill-rolling | A circular movement of the opposed tips of the thumb and the index finger appearing as a form of tremor in paralysis agitans. (05 Mar 2000) |
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| pill-rolling tremor | Resting tremor of the thumb and fingers seen in Parkinson disease. (05 Mar 2000) |