The most common and most likely answer to this crossword clue is the 7 letter word DERIVED
I've seen this crossword clue in The Daily Telegraph
D
E
R
I
V
E
D
More clues leading to the result DERIVED
Buddy explains!

The straight part
We know that "Obtained" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case obtained = derived.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DERIVED mean?
DERIVED verb- To obtain or receive (something) from something else.
- To deduce (a conclusion) by reasoning.
- To find the derivation of (a word or phrase).
- To create (a compound) from another by means of a reaction.
- To originate or stem (from).
- To turn the course of (water, etc.); to divert and distribute into subordinate channels.
- Of, or pertaining to, conditions unique to the descendant species of a clade, and not found in earlier ancestral species.
- Possessing features believed to be more advanced or improved than those other organisms.
- Product of derivation