Understanding the Synonym for Autonomous

The question asks us to find the most appropriate synonym for the word "autonomous" as used in the given sentence: "They have also tested fully (autonomous) landings and semi - autonomous take - offs for the gas - powered rotorcraft."

To find the correct synonym, we first need to understand the meaning of the word "autonomous" in this context.

The word "autonomous" means acting independently or having the freedom to govern itself or control its own affairs. When referring to machines or processes, it implies operating without direct human control or intervention. In the sentence, "autonomous landings" means the rotorcraft lands by itself, without a pilot's direct control. "Semi-autonomous take-offs" means the take-off process involves some degree of automated control, but perhaps still requires some human oversight or input.

Analyzing the Options for Autonomous Synonym

Let's look at the provided options and see which one best matches the meaning of "autonomous":

• Occlude: This word means to stop, close up, or block something, such as a passage or opening. For example, a blood clot can occlude an artery. This meaning is completely unrelated to "autonomous".
• Obstruct: This word means to block an opening, path, or view; or to hinder or prevent movement or progress. For example, fallen trees can obstruct the road. This meaning is also unrelated to "autonomous".
• Unanimous: This word describes a decision or opinion agreed upon by all people involved. For example, a unanimous vote means everyone voted the same way. This is related to agreement by multiple parties, not independent action by a single entity like a rotorcraft.
• Independent: This word means free from outside control or influence; not depending on another for livelihood or subsistence. When applied to a machine or system, it means operating or functioning on its own, without external direction or control. This aligns perfectly with the meaning of "autonomous" landings or take-offs.

Comparing Meanings of Autonomous and Options

Let's summarize the meanings:

Based on the meanings, "independent" is the word that best captures the sense of operating on its own or without direct human control, which is what "autonomous" means in the context of the sentence.

Conclusion: Choosing the Correct Synonym

The word "autonomous" in the sentence describes landings and take-offs that happen without direct external control. Among the given options, "independent" is the word that means acting or operating on its own, without dependence on others. Therefore, "independent" is the most appropriate synonym for "autonomous" in this sentence.

Revision Table: Key Vocabulary

Additional Information: Autonomy and Related Concepts

The concept of "autonomy" is important in many fields, especially in technology and engineering.

• Automation: This refers to the use of technology to perform tasks with minimal human assistance. Autonomous systems are often highly automated.
• Semi-autonomous: This describes systems that have some level of automation or independence but still require human oversight or intervention at certain points. The sentence mentions "semi-autonomous take-offs," indicating this mixed control.
• Robotics: Robots are often designed to be autonomous, performing complex tasks independently based on programming and sensor data.
• Self-driving cars: These are a common example of autonomous vehicles, capable of navigating and driving without human control.

Understanding words like "autonomous" and their synonyms helps improve vocabulary and comprehension, especially in technical or scientific texts.