Adjective
having an open chain structure
not cyclic; especially having parts arranged in spirals rather than whorls
Source: WordNetA monosaccharide can switch from the acyclic (open-chain) form to a cyclic form, through a nucleophilic addition reaction between the carbonyl group and one of the hydroxyls of the same molecule. Source: Internet
An upward planar graph is a directed acyclic graph that can be drawn in the plane with its edges as non-crossing curves that are consistently oriented in an upward direction. Source: Internet
Conversion between the furanose, acyclic, and pyranose forms of D-glucose. Source: Internet
Equivalently, a forest is an undirected acyclic graph. Source: Internet
However, specialized cases (such as bounded/integer weights, directed acyclic graphs etc.) can indeed be improved further as detailed in main. Source: Internet
In reality the structure is more complicated, forming a directed acyclic graph, but for many purposes "tree with merges" is an adequate approximation. Source: Internet