Meridian Frame
A reference line and a structural noun suggest a framework people orient themselves within.
SCIENCE FICTION & SPACE
Megastructure name generator
Name vast speculative constructions through their public purpose, boundaries, and the people responsible for a small part.
A FICTIONAL WORLD, A CLEAR BRIEF
What does this tool name?
A megastructure name labels an imagined construction whose scale shapes the setting. Generate names that distinguish the whole work from a local district and give its immense size a human point of entry.
By Grape trellis editorial · AI-assisted original examples · Updated October 28, 2026
Your next possibilities
Creative drafts · revise freelyGenerate a batch to explore combinations, or begin with an original example below.
Woven Vault
An assembled texture leaves room for many builders and successive repairs.
Common Span
A shared crossing gives an immense work a public purpose.
Select up to three names to compare.
Your comparison desk
These are visible text properties and editorial prompts, not a validated quality score.
Names can overlap with existing works. No exclusivity or rights clearance is implied.
MAKE THE NAME YOURS
The thinking behind the tool
Name the whole structure, one accessible section, and one responsible office. Keep their scales distinct. A vast title becomes useful when a character can explain where they need to go and who can help them get there.
From a name to a scene
Three fictional examples, each with a different design choice. These are teaching examples, separate from the live combinations above.
Meridian Frame
A reference line and a structural noun suggest a framework people orient themselves within.
A fictional sceneA local repair office receives a request addressed to the entire Frame and must find the district that originally sent it.
Try this: Write an address from whole structure to service door in four fields.
Woven Vault
An assembled texture leaves room for many builders and successive repairs.
A fictional sceneOne district celebrates completion while neighboring districts still count the same construction as unfinished.
Try this: Name the local milestone instead of declaring the whole structure complete.
Common Span
A shared crossing gives an immense work a public purpose.
A fictional sceneA tiny toll office inherits authority over the only officially recognized crossing between two immense sections.
Try this: Make the office’s limited jurisdiction clear in a visitor notice.
Use a shortlist, then test it
Try a candidate in dialogue, a map, an item list, or a chapter heading. Compare it with the nearest five labels. Keep a short form if the full one becomes awkward. These are creative associations rather than documented meanings or real-world claims.
Does this design a Dyson sphere or ringworld?
No. It produces fictional construction names and continuity prompts, without engineering, orbital, or energy calculations.
How do I name districts inside the structure?
Use a distinct district opening and record its relationship to the whole. The orbital habitat tool can help with residential communities.
How are the names generated?
The tool combines category-specific word banks using a repeatable local rule. It does not research etymology or check every output against existing names. Read the method.
Can I use a name in a commercial project?
Grape trellis charges no fee and requires no attribution for generated names. You remain responsible for checking third-party rights, existing uses, and suitability. Results are nonexclusive. Read the terms.
Where are saved names kept?
They stay in localStorage in this browser until removed or site data is cleared. There is no account or cloud sync. Export anything you need to keep. Read the privacy policy.
What the naming lab actually checks
Custom vocabulary changes the real combination pool. Length, initial, excluded fragments, word count, alliteration, and project collisions filter that pool before ordering. The diagnostics count the first reason each rejected combination fails, so their totals can be compared with the remaining candidates. A small pool can produce fewer names than requested.
Case and punctuation normalization catches exact project-name repeats. Close-spelling comparison uses letter-edit distance rather than a claim about pronunciation or meaning. It cannot establish originality or availability outside the names you provide. Opening variety is applied after ordering; disable it if you need a strictly shortest-first list. Sound preference uses English letter counts and is an editorial heuristic.
Export JSON to keep the exact brief and result records; CSV provides a spreadsheet-friendly candidate list and a column containing the full brief. JSON can be loaded back into the same tool. If you include saved names in collision checks, the export resolves those names into the brief so a later run does not silently depend on a changed shortlist.
A WORKING RECORD FOR MEGASTRUCTURE NAMES
Develop the setting behind the name
Anchor scale in an errand
Give a character a specific destination and an ordinary reason to visit it. The whole construction can remain vast and partly unknown while the current route is clear. A maintenance counter or a district archive provides a useful entry point.
Separate completion stories
An immense construction can have several founding dates because different sections were built or occupied at different times. Assign each date claim to a district or institution. Let the name survive disagreements without erasing them.
Avoid decorative technical certainty
A label such as Shell or Ringwork is imagery here, not a structural analysis. If the story promises a particular engineering model, research it separately. The naming tool provides social and narrative distinctions rather than feasibility calculations.
Build a reproducible naming brief
- Choose a complete or compact structure. Grounded and lyrical select different halves of this tool’s opening and ending banks; they are editorial directions, not scientific categories.
- Use the naming lab to add project vocabulary, restrict word count, or select a hyphenated or numbered label. Custom entries are limited to 30 phrases per bank, with 40 characters per phrase.
- Paste nearby project names into the collision field. Exact comparison ignores case and punctuation; close-spelling comparison uses edit distance. Neither searches the public web or checks rights.
- Choose a story emphasis to receive one of this tool’s three authored context prompts. The prompt is a fictional starting point, not an explanation of a real technology.
- Keep the seed and export the brief with the batch. The same tool data and complete settings reproduce the order; changing the project vocabulary or collision list changes the candidate pool.
Inspect the actual word banks
Opening imagery: Meridian, Common, Endless, Lattice, Far, Crown, Woven, Horizon, Morrow, Great.
Ending vocabulary: Span, Frame, Shell, Ringwork, Vault, Array, Loom, Crown, Scaffold, Reach.
Balanced full names begin with 100 possible pairs before duplicate, grammar, and brief filters. Compact names use opening phrases only. The live diagnostics show how many candidates remain after your own settings; requesting a larger batch does not invent extra vocabulary.
A record you can carry into the manuscript
Keep the chosen spelling, its plain function, the speaker or office that uses it, a short form, and one unresolved question from the examples. Add the surrounding names you checked. Save the export outside your browser if the work matters: local saved names and presets are conveniences, not a cloud archive.
Keep growing your world.
All tools
Cryosleep program names
Develop names for invented suspended-animation services, long-voyage rosters, and promises made to future passengers.
Open naming toolAlien ecosystem names
Invent observer-aware names for speculative biomes, living landscapes, and field-study regions beyond Earth.
Open naming toolFirst-contact protocol names
Create labels for fictional encounter procedures, interpretation agreements, and diplomatic pauses with clear limits.
Open naming tool