not cyclic; especially having parts arranged in spirals rather than whorls
having an open chain structure
例句
The relationship among the layers is acyclic. 层次之间的关系是无回路的。
The isocyanates can be obtained by the fluorination of nitrogenous cylic or acyclic molecules. 异氰酸酯可由含氯的环(或非环)状分子氟化而得。
The dependency structure between packages must be a directed acyclic graph (DAG). That is, there must be no cycles in the dependency structure. 包之间的依赖结构必须是一个直接的无环图形（DAG）。也就是说，在依赖结构中不允许出现环（循环依赖）。
In many practical applications (for example, in AOV-network), it is necessary that graph G should be an acyclic graph. 在许多实际应用(例如AOV-network)中,图G必需是非循环图。
Markov network is an undirected graph, while Bayesian network is a directed acyclic graph. Markov网是一个无向图 ;而 Bayesian网是一个有向无环图 .
ADP) The Acyclic Dependencies Principle: Allow no cycles in the package dependency graph. 无环依赖原则(ADP):在包的依赖关系图中不允许存在环。
