# Is there a word for the relationship between a sequential series of tasks where each one is dependent on completion of the one before it?

I'm looking for a word that describes the backward, dependency between items that must be completed in a specific order, one after another.

"A series of interdependent tasks."

Is there a word that is more specific than interdependent? I don't want to imply that multiple tasks might depend on multiple other tasks. I also don't want to imply that two or more tasks might share dependencies between themselves at the same time. Only one task at a time has dependency on its prerequisite and the dependency relationship only goes in one direction.

• I would simply suggest "A necessarily sequential set of tasks", as opposed to "a necessary set of tasks".
– WS2
Mar 29, 2018 at 21:26
• It is NOT an answer. I'm not sure what kind of tasks they are , but I would suggest considering follow-on tasks or chain tasks or chain-kind-of tasks.
– haha
Mar 29, 2018 at 22:17
• chain tasks? Are those task performed by a chain? [ha ha] Mar 29, 2018 at 23:23
• Probably :) ....
– haha
Mar 29, 2018 at 23:54
• Is the interdependence what you want to express, or would the sequential nature do? Compare assembling a watch (task dependency) with mowing a series of lawns (only time dependency). Mar 30, 2018 at 0:18

The Oxford Reference has 'sequentially dependent task'.

You can use subsequent

As in, set of subsequent tasks.

in succession from succeed dictionary.com

To come next in time or order; the coming of one person or thing after another in order, sequence, or in the course of events:

As in:

"A set of tasks done in succession"

List has a very precise meaning in mathematical or computer science domains, which seems to apply here.

Would a ”a list of tasks” make sense?

In computer science, a list or sequence is an abstract data type that represents a countable number of ordered values, where the same value may occur more than once. https://en.wikipedia.org/wiki/List_(abstract_data_type)

This is in contrast with a set which has no order.

Procedure : A series of actions conducted in a certain order or manner.